Problem-1

#include <stdio.h>
int main() {
int n;
printf("Enter N: ");
scanf("%d", &n);
for (int row = 1; row <= n; row++) {
for (int col = 1; col <= n; col++) {
printf("%d", col);
}
printf("\n");
}

return 0;
}

Problem-2

#include <stdio.h>
int main() {
int n;
printf("Enter N: ");
scanf("%d", &n);

for (int row = 1; row <= n; row++) {
for (int col = row; col < row + n; col++) {
printf("%d", col);
}
printf("\n");
}

return 0;
}

Problem-3

#include<stdio.h>
int main(){
int n,row,col,number;
printf("Enter N: ");
scanf("%d",&n);

for(row=1;row<=n;row++){
number=row;

for(col=0;col<row;col++){
printf("%d", number++);
}
printf("\n");
}
return 0;
}

Problem-4

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {

        for (int bspace = 1; bspace <= n - row; bspace++) {
            printf("_");
        }


        for (int col = 1; col <= row; col++) {
            printf("%d", row);
        }

        printf("\n");
    }

    return 0;
}

Problem-5

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row= 1; row<= n; row++) {
        for (int col = n; col >= n - row+ 1; col--) {
            printf("%d", col);
        }
        printf("\n");
    }

    return 0;
}

Problem-6

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row= 1;row<= n; row++) {
        for (int col = 1; col <= row; col++) {
            printf("%d", col);
        }
        printf("\n");
    }

    return 0;
}

Problem-7

#include <stdio.h>

int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row= 1;row<= n; row++) {
        for (int col = 1; col <= n; col++) {
            printf("*");
        }
        printf("\n");
    }

    return 0;
}

Problem-8

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = n; row >= 1; row--) {
        for (int col = 1; col <= row; col++) {
            printf("*");
        }
        printf("\n");
    }

    return 0;
}

Problem-9

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        for (int col = 1; col <= n; col++) {
            if ((row + col) % 2 == 0) {
                printf("1");
            } else {
                printf("0");
            }
        }
        printf("\n");
    }

    return 0;
}

Problem-10

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        for (int sp = 1; sp <= n - row; sp++) {
            printf("_");
        }
        for (int st = 1; st <= row; st++) {
            printf("*");
        }
        printf("\n");
    }

    return 0;
}

Problem-11

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        for (int sp = 1; sp <= n - row; sp++) {
            printf("_");
        }
        for (int st = 1; st <= row * 2 - 1; st++) {
            printf("*");
        }
        printf("\n");
    }

    return 0;
}

Problem-12

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    if (n % 2 == 0) {
        printf("Enter an odd integer");
        return 1;
    }

    int mid = n / 2;

    for (int i = 0; i < n; i++) {
        int st, sp;
        if (i <= mid) {
            st = i * 2 + 1;
            sp = mid - i;
        } else {
            st = (n - i) * 2 - 1;
            sp = i - mid;
        }
        for (int j = 0; j < sp; j++) {
            printf("_");
        }

        for (int j = 0; j < st; j++) {
            printf("*");
        }

        printf("\n");
    }

    return 0;
}

Problem-13

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        for (int col = 1; col <= row; col++) {
            printf("%d", col);
        }

        for (int col = 1; col < 2*(n - row); col++) {
            printf("_");
        }

        if (row == n)
        {
            for (int col = row - 1; col >= 1; col--) {
                printf("%d", col);
            }
        }
        else
        {
            for (int col = row; col >= 1; col--) {
                printf("%d", col);
            }
        }

        printf("\n");
    }

    return 0;
}

Problem-14

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        if (row % 2 == 1) {
            for (int col = 1; col <= n; col++) {
                printf("*");
            }
        } else {
            printf("*");
            for (int col = 2; col < n; col++) {
                printf("_");
            }
            printf("*");
        }

        printf("\n");
    }

    return 0;
}

Problem-15

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        for (int col = 1; col <= n; col++) {
            if (row == 1 || row == n ||  col == n - row + 1) {
                printf("Z");
            } else {
                printf(" ");
            }
        }
        printf("\n");
    }

    return 0;
}

Problem-16

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 1; row <= n; row++) {
        for (int col = 1; col <= n; col++) {
            if (row == col || row + col == n + 1) {
                printf("*");
            } else {
                printf("_");
            }
        }
        printf("\n");
    }

    return 0;
}

Problem-17

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()
{
    int n;
    printf("Enter an odd integer: ");
    scanf("%d", &n);

    int mid = n / 2;
    for (int row = 0; row < n; row++)
    {
        for (int col = 0; col < n; col++)
        {
            if ( row >= mid)
            {
                if (row == mid || col == mid)
                {
                    printf("$");
                }
                else if (abs(row - col) == mid || row + col == n - 1 + mid)
                {
                    printf("$");
                }
                else
                {
                    printf("_");
                }
            }
            else
            {
                if (row == mid || col == mid)
                {
                    printf("$");
                }
                else if (abs(row - col) == mid || row + col == mid)
                {
                    printf("$");
                }
                else
                {
                        printf("_");
                }
            }
        }
        printf("\n");
    }
    return 0;
}

Problem-18

#include <stdio.h>
int main() {
    int n;
    printf("Enter N: ");
    scanf("%d", &n);

    for (int row = 0; row < n; row++) {
        for (int col = 0; col < n; col++) {
            if (row == n / 2 || col == 0 || col == n-1) {
                printf("H ");
            } else {
                printf("  ");
            }
        }
        printf("\n");
    }

    return 0;
}

Problem-1

#include <stdio.h>

int main() {
    int n, i;
    printf("Enter array size: ");
    scanf("%d", &n);
    int array[n];
    printf("Enter %d elements of the array:\n", n);

    for (int i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }

    printf("Array elements in reverse order:\n");

    for (i = n - 1; i >= 0; i--) {
        printf("%d ", array[i]);
    }

    return 0;
}

Problem-2

#include <stdio.h>

int main() {
    int n, sum = 0;

    // Input the number of integers
    printf("Enter the number of integers: ");
    scanf("%d", &n);

    // Declare an array of size n
    int array[n];

    // Input the integers into the array
    printf("Enter %d integers:\n", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &array[i]);
        sum += array[i]; // Add the current integer to the sum
    }

    // Display the sum
    printf("Sum of the integers: %d\n", sum);

    return 0;
}

Problem-3

#include <stdio.h>

int main() {
    int n, i;
    printf("Enter the size of the array: ");
    scanf("%d", &n);
    int array[n];
    printf("Enter %d integers:\n", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }
    int sum = 0;
    for (i = 0; i < n; i++) {
        if (array[i] % 2 == 0) {
            sum += array[i];
        }
    }
    printf("Sum of even integers in the array: %d\n", sum);
    return 0;
}

Problem-4

#include <stdio.h>

int main() {
    int n, i;
    printf("Enter the size of the array: ");
    scanf("%d", &n);
    float arr[n];
    printf("Enter %d numbers: ", n);
    for (i = 0; i < n; i++) {
        scanf("%f", &arr[i]);
    }
    float sum = 0;
    for (i = 0; i < n; i++) {
        sum += arr[i];
    }
    float average = sum / n;
    printf("Average is: %.2f\n", average);
    return 0;
}

Problem-5

#include <stdio.h>

int main() {
    int n, i;
    printf("Enter the size of the array: ");
    scanf("%d", &n);
    int array[n];
    printf("Enter %d integers:\n", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }
    int sum = 0;
    for (i = 0; i < n; i++) {
        if (i % 2 == 0) {
            sum += array[i];
        }
    }
    printf("Sum of even integers of array: %d\n", sum);
    return 0;
}

Problem-6

#include <stdio.h>

int main() {
    int n;
    printf("Enter the size of the array: ");
    scanf("%d", &n);
    int firstArray[n];
    int secondArray[n];
    int sumArray[n];

    printf("Enter %d elements for the first array:\n", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &firstArray[i]);
    }

    printf("Enter %d elements for the second array:\n", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &secondArray[i]);
    }

    for (int i = 0; i < n; i++) {
        sumArray[i] = firstArray[i] + secondArray[i];
    }

    printf("Sum of corresponding numbers:\n");
    for (int i = 0; i < n; i++) {
        printf("%d ", sumArray[i]);
    }

    return 0;
}

Problem-7

#include <stdio.h>

int main() {
    int n, i, temp;
    printf("Enter the size of the array: ");
    scanf("%d", &n);
    int arr[n];

    printf("Enter %d elements of the array: ", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &arr[i]);
    }

    // Reversing the array
    for (i = 0; i < n / 2; i++) {
        temp = arr[i];
        arr[i] = arr[n - 1 - i];
        arr[n - 1 - i] = temp;
    }

    printf("Reversed array: ");
    for (i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");

    return 0;
}

Problem-8

#include <stdio.h>

int main() {
    int n, i;
    printf("Enter the size of the array: ");
    scanf("%d", &n);
    int array[n];

    printf("Enter the elements of the array: ");
    for (i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }

    int max = array[0], min = array[0], maxIndex = 0, minIndex = 0;

    for (i = 1; i < n; i++) {
        if (array[i] > max) {
            max = array[i];
            maxIndex = i;
        }
        if (array[i] < min) {
            min = array[i];
            minIndex = i;
        }
    }

    printf("Max: %d, Index: %d\n", max, maxIndex);
    printf("Min: %d, Index: %d\n", min, minIndex);

    return 0;
}

Problem-9

#include <stdio.h>

int main() {
    int n, vowelCount = 0;
    printf("Enter the number of alphabets: ");
    scanf("%d", &n);
    char alphabets[n];

    printf("Enter %d alphabets:\n", n);
    for (int i = 0; i < n; i++) {
        scanf(" %c", &alphabets[i]);
    }

    for (int i = 0; i < n; i++) {
        char currentChar = alphabets[i];
        if (currentChar == 'A' || currentChar == 'E' || currentChar == 'I' ||
            currentChar == 'O' || currentChar == 'U' || currentChar == 'a' ||
            currentChar == 'e' || currentChar == 'i' || currentChar == 'o' || currentChar == 'U')
        {
            vowelCount++;
        }
    }

    printf("Number of vowels: %d\n", vowelCount);
    return 0;
}

Problem-10

#include <stdio.h>

int main() {
    int n, i, searchKey, found = 0;
    printf("Enter the size of array: ");
    scanf("%d", &n);
    int array[n];

    printf("Enter the integers: ");
    for (i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }

    printf("Enter the number to search: ");
    scanf("%d", &searchKey);

    for (i = 0; i < n; i++) {
        if (array[i] == searchKey) {
            found = 1;
            break;  // Break the loop if the key is found
        }
    }

    if (found == 1) {
        printf("FOUND\n");
    } else {
        printf("NOT FOUND\n");
    }

    return 0;
}

Problem-11

#include <stdio.h>

int main() {
    int n, i;
    printf("Enter the size of array: ");
    scanf("%d", &n);
    int A[n], B[n];

    printf("Enter the elements for array A: ");
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    printf("Array A:");
    for (i = 0; i < n; i++) {
        printf(" %d", A[i]);
        B[n - i - 1] = A[i];
    }

    printf("\n");
    printf("Array B:");
    for (i = 0; i < n; i++) {
        printf(" %d", B[i]);
    }

    printf("\n");
    return 0;
}

Problem-12

#include <stdio.h>

int main() {
    int n, position, number;
    printf("Enter the size of array: ");
    scanf("%d", &n);
    int array[n];

    printf("Enter %d integers:\n", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }

    printf("Enter the number to insert: ");
    scanf("%d", &number);
    printf("Enter the position to insert: ");
    scanf("%d", &position);

    // Shifting the elements to the right
    for (int i = n - 1; i >= position; i--) {
        array[i + 1] = array[i];
    }

    // Inserting the number at the specified position
    array[position] = number;

    printf("Array after insertion:\n");
    for (int i = 0; i < n + 1; i++) {
        printf("%d ", array[i]);
    }

    return 0;
}

Problem-13

#include <stdio.h>

int main() {
    int n, position, i;
    printf("Enter the size of array: ");
    scanf("%d", &n);
    int array[n];

    printf("Enter %d elements for the array:\n", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &array[i]);
    }

    printf("Enter the position: ");
    scanf("%d", &position);

    if (position >= 0 && position < n) {
        for (i = position; i < n - 1; i++) {
            array[i] = array[i + 1];
        }
        n--;

        printf("Array after deletion:");
        for (i = 0; i < n; i++) {
            printf(" %d", array[i]);
        }
        printf("\n");
    } else {
        printf("Invalid position!\n");
    }

    return 0;
}

Problem-14

#include <stdio.h>

int main() {
    int n, m;

    // Input the size of arrays A and B
    printf("Enter the size of array A: ");
    scanf("%d", &n);
    printf("Enter the size of array B: ");
    scanf("%d", &m);

    // Check if the sizes are compatible for swapping
    if (n != m) {
        printf("Array sizes are not compatible for swapping.\n");
        return 1;
    }

    // Declare arrays A and B with the same size
    int A[n], B[n];

    // Input elements for array A
    printf("Enter %d integers for array A:\n", n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Input elements for array B
    printf("Enter %d integers for array B:\n", m);
    for (int i = 0; i < m; i++) {
        scanf("%d", &B[i]);
    }

    // Swap elements between arrays A and B
    for (int i = 0; i < n; i++) {
        int temp = A[i];
        A[i] = B[i];
        B[i] = temp;
    }

    // Display elements of both arrays
    printf("Array A after swapping:\n");
    for (int i = 0; i < n; i++) {
        printf("%d ", A[i]);
    }
    printf("\n");

    printf("Array B after swapping:\n");
    for (int i = 0; i < m; i++) {
        printf("%d ", B[i]);
    }
    printf("\n");

    return 0;
}

Problem-15

#include <stdio.h>

int main() {
    int n, i;

    // Input the size of the array
    printf("Enter the size of the array: ");
    scanf("%d", &n);

    // Declare an array with the given size
    int A[n];

    // Input elements for the array
    printf("Enter %d elements: ", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Replace elements that are divisible by 3 with -1
    for (i = 0; i < n; i++) {
        if (A[i] % 3 == 0) {
            A[i] = -1;
        }
    }

    // Display the array after replacement
    printf("Array A after replacing: ");
    for (i = 0; i < n; i++) {
        printf("%d ", A[i]);
    }
    printf("\n");

    return 0;
}

Problem-16

#include <stdio.h>

int main() {
    int n, i;

    // Input the size of the array
    printf("Enter the size of the array: ");
    scanf("%d", &n);

    // Declare an array with the given size
    int A[n];

    // Input elements for the array
    printf("Enter %d elements: ", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Replace elements at odd indexes with 0
    for (i = 1; i < n; i += 2) {
        A[i] = 0;
    }

    // Display the array after replacement
    printf("Array A after replacing: ");
    for (i = 0; i < n; i++) {
        printf("%d ", A[i]);
    }
    printf("\n");

    return 0;
}

Problem-17

#include <stdio.h>

int main() {
    int n, i, j;

    // Input the size of the array
    printf("Enter the size of the array: ");
    scanf("%d", &n);

    // Declare an array with the given size
    int A[n];

    // Input elements for the array
    printf("Enter %d elements: ", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Bubble Sort
    for (i = 0; i < n - 1; i++) {
        for (j = 0; j < n - i - 1; j++) {
            if (A[j] > A[j + 1]) {
                // Swap elements if they are in the wrong order
                int temp = A[j];
                A[j] = A[j + 1];
                A[j + 1] = temp;
            }
        }
    }

    // Display the sorted array
    printf("Array A after sorting: ");
    for (i = 0; i < n; i++) {
        printf("%d ", A[i]);
    }
    printf("\n");

    return 0;
}

Problem-18

#include <stdio.h>

int main() {
    int n, i, j;

    // Input the size of the array
    printf("Enter the size of the array: ");
    scanf("%d", &n);

    // Declare arrays for the input and unique elements
    int A[n], uniqueArray[n];

    // Input elements for the array
    printf("Enter the elements of the array: ");
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Remove duplicates
    int uniqueCount = 0;
    for (i = 0; i < n; i++) {
        int isDuplicate = 0;
        for (j = 0; j < uniqueCount; j++) {
            if (A[i] == uniqueArray[j]) {
                isDuplicate = 1;
                break;
            }
        }
        if (!isDuplicate) {
            uniqueArray[uniqueCount++] = A[i];
        }
    }

    // Display the array after removing duplicates
    printf("Array A after removing duplicates: ");
    for (i = 0; i < uniqueCount; i++) {
        printf("%d ", uniqueArray[i]);
    }
    printf("\n");

    return 0;
}

Problem-19

#include <stdio.h>

int main() {
    int n, m, i, j;

    // Input size and elements for array A
    printf("Enter the size of array A: ");
    scanf("%d", &n);
    int A[n];
    printf("Enter the elements of array A: ");
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Input size and elements for array B
    printf("Enter the size of array B: ");
    scanf("%d", &m);
    int B[m];
    printf("Enter the elements of array B: ");
    for (i = 0; i < m; i++) {
        scanf("%d", &B[i]);
    }

    // Find and display the intersection
    int hasIntersection = 0;
    for (i = 0; i < n; i++) {
        for (j = 0; j < m; j++) {
            if (A[i] == B[j]) {
                printf("%d ", A[i]);
                hasIntersection = 1;
                break;
            }
        }
    }

    // Display "Empty set" if no intersection is found
    if (!hasIntersection) {
        printf("Empty set");
    }
    printf("\n");

    return 0;
}

Problem-20

#include <stdio.h>

int main() {
    int n, m, i, j;

    // Input size and elements for array A
    printf("Enter the size of array A: ");
    scanf("%d", &n);
    int A[n];
    printf("Enter %d elements for array A:\n", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Input size and elements for array B
    printf("Enter the size of array B: ");
    scanf("%d", &m);
    int B[m];
    printf("Enter %d positive elements for array B:\n", m);
    for (i = 0; i < m; i++) {
        scanf("%d", &B[i]);
    }

    // Creating a temporary array C with size equal to the sum of sizes of A and B
    int C[n + m];

    // Copying elements of A to C
    for (i = 0; i < n; i++) {
        C[i] = A[i];
    }

    // Copying elements of B to C, excluding duplicates from A
    int unionSize = n; // Size of the union array
    for (i = 0; i < m; i++) {
        int found = 0; // Flag to check if the element is already present in A

        // Checking if the element is already present in A
        for (j = 0; j < n; j++) {
            if (B[i] == A[j]) {
                found = 1;
                break;
            }
        }

        // If the element is not found in A, add it to C
        if (!found) {
            C[unionSize] = B[i];
            unionSize++;
        }
    }

    // Display the union of arrays A and B
    printf("Union of array A and array B:\n");
    for (i = 0; i < unionSize; i++) {
        printf("%d ", C[i]);
    }

    return 0;
}

Problem-21

#include <stdio.h>

int main() {
    int n, m, i, j;

    // Input size and elements for array A
    printf("Enter the size of array A: ");
    scanf("%d", &n);
    int A[n];
    printf("Enter %d integers for array A:\n", n);
    for (i = 0; i < n; i++) {
        scanf("%d", &A[i]);
    }

    // Input size and elements for array B
    printf("Enter the size of array B: ");
    scanf("%d", &m);
    int B[m];
    printf("Enter %d positive integers for array B:\n", m);
    for (i = 0; i < m; i++) {
        scanf("%d", &B[i]);
    }

    // Find the difference (A - B)
    int diffSize = 0;
    int diff[n]; // The difference array

    // Loop through elements of A
    for (i = 0; i < n; i++) {
        int found = 0; // Flag to check if the element is in B

        // Check if the element is in B
        for (j = 0; j < m; j++) {
            if (A[i] == B[j]) {
                found = 1;
                break;
            }
        }

        // If the element is not in B, add it to the difference array
        if (!found) {
            diff[diffSize] = A[i];
            diffSize++;
        }
    }

    // Display the difference array
    printf("Difference (A - B):\n");
    for (i = 0; i < diffSize; i++) {
        printf("%d ", diff[i]);
    }

    return 0;
}

Problem-1

#include<stdio.h>
int main(){
int number;
printf("Enter :");
scanf("%d",&number);

for(int i=1;i<=number;i++)
{
    printf("%d",i);

    if(i!=number){

        printf(",");

}
}
return 0;

}

Problem-2

#include<stdio.h>
int main(){
int number,odd=1;
printf("Enter :");
scanf("%d",&number);

for(int i=1;i<=number;i++)
{

    printf("%d",odd);

    odd+=2;
    if(i!=number){

        printf(",");

}
}
return 0;
}

Problem-3

#include<stdio.h>
int main(){
int number;
printf("Enter :");
scanf("%d",&number);

for(int i=1;i<=number;i++)
{
    if(i%2==1)

        printf("1");

    else

        printf("0");

    if(i!=number)

        printf(",");

}
return 0;
}

Problem-4

#include <stdio.h>
int main()
{
int n, i;
float input, sum = 0, average;
printf("How many numbers you wish to average : ");
scanf("%d", &n);
printf("Enter %d numbers:\n", n);
for (i = 1; i <= n; i++)
{
scanf("%f", &input);
sum += input;
}
average = sum / n;
printf("AVG of %d inputs: %f\n",n, average);
return 0;
}

Problem-5

#include<stdio.h>
int main()
{
int X, Y;
printf("Enter the value of X: ");
scanf("%d", &X);
printf("Enter the value of Y: ");
scanf("%d", &Y);

while (X != Y) {
printf("%d", X * X);

if (X < Y) {
X++;
printf(", ");
}

else {
X--;
printf(", ");
}
}

printf("Reached!\n");
return 0;

}

Problem-6

#include <stdio.h>

int main() {
int X, N, Guess, Tries_left;
printf("Enter the number given by Player-1: ");
scanf("%d", &X);
printf("Enter the number of tries given for Player-2: ");
scanf("%d", &N);
Tries_left = N;

while (Tries_left > 0) {
printf("Enter your Guess: ");
scanf("%d", &Guess);

if (Guess == X) {
printf("Right, Player-2 wins!\n");
break;
} else {
Tries_left--;
printf("Wrong, %d Choice(s) Left!\n", Tries_left);
}
}

if (Tries_left == 0) {
printf("Player-1 wins!\n");
}

return 0;
}

Problem-7

#include <stdio.h>
int main() {
char input;
int i = 1;
printf("Enter  inputs:");

while (1) {
scanf(" %c", &input);

if (input == 'A') {
break;
}

printf("Input %d: %c\n", i, input);
i++;
}

return 0;
}

Problem-8

#include <stdio.h>
int main() {
int number, reverse = 0;
printf("Enter the Number: ");
scanf("%d", &number);

while (number != 0) {
int digit = number % 10;
reverse = reverse * 10 + digit;
number = number /10;
}

printf("Reverse: %d\n", reverse);
return 0;
}

Problem-9

#include <stdio.h>
int main() {
int N;
printf("Enter the number of  Students: ");
scanf("%d", &N);

for ( int i = 1; i <= N; i++) {
float attendance, assignment, classtest, midterm, Final;
float total;

printf("Enter the marks of  Student %d (Attendance, Assignment, Class Test, Midterm,  Final): ", i);
scanf("%f%f%f%f%f", &attendance, &assignment, &classtest, &midterm, &Final);

total = attendance + assignment + classtest + midterm * 0.6 + Final * 0.4;
printf("Total marks:%f\n", total);

if (total >= 90) {
printf("Grade of Student %d : A\n", i);
}
else if (total >= 86) {
printf("Grade of Student %d : A-\n", i);
}
else if (total >= 82) {
printf("Grade of Student %d : B+\n", i);
}
else if (total >= 78) {
printf("Grade of Student %d : B\n", i);
} else if (total >= 74) {
printf("Grade of Student %d : B-\n", i);
} else if (total >= 70) {
printf("Grade of Student %d : C+\n", i);
} else if (total >= 66) {
printf("Grade of Student %d : C\n", i);
} else if (total >= 62) {
printf("Grade of Student %d : C-\n", i);
} else if (total >= 58) {
printf("Grade of Student %d : D+\n", i);
} else if (total >= 55) {
printf("Grade of Student %d : D\n", i);
} else {
printf("Grade of Student %d : F\n", i);
}
}

return 0;
}

Problem-10

#include <stdio.h>

int main() {
int N, i, number;
int sum = 0;
printf("Enter the value of N: ");
scanf("%d", &N);

for (i = 1; i <= N; i++) {
if (i % 2 == 0) {
number = -i;
printf("%d,",number);
}
else {
number = i;
printf("%d,",number);
}

sum += number;

/*if(i!=number){
printf(",");}*/
}

printf("\nRESULT OF FIRST %dth TERMS: %d\n", N, sum);
return 0;
}

Problem-11

#include <stdio.h>
int main()
{
int N, i, result = 0, number = 0;
printf("Enter the value of N: ");
scanf("%d", &N);

for (i = 1; i <= N; i++) {
int num=(i + 1);
number = i * i * num ;
printf("%d^2.%d + ",i,num);
result += number;
}

printf("Result of first %d terms: %d\n", N, result);
return 0;
}

Problem-12

#include <stdio.h>
int main() {
int N, i;
printf("Enter the value of N: ");
scanf("%d", &N);
int firstnumber = 1, secondnumber = 1;
printf("Fibonacci series : %d, %d", N, firstnumber, secondnumber);
for (i = 3; i <= N; i++) {
int nextnumber = firstnumber + secondnumber;
printf(", %d", nextnumber);
firstnumber = secondnumber;
secondnumber = nextnumber;
}

return 0;
}

Problem-13

#include <stdio.h>
int main() {
int N, i, factorial = 1;
printf("Enter a number: ");
scanf("%d", &N);
printf("%d! = ", N);

for (i = N; i >= 1; i--) {
printf("%d", i);
factorial *= i;

if (i != 1) {
printf(" X ");
}
}

printf(" = %d\n", factorial);
return 0;
}

Problem-14

#include <stdio.h>
int main() {
int n, r, numerator = 1, denominator_r = 1, denominator_nr = 1;
float result;

printf("Enter the value of n: ");
scanf("%d", &n);
printf("Enter the value of r: ");
scanf("%d", &r);

for (int i = 1; i <= n; i++) {
numerator *= i;
}

for (int i = 1; i <= r; i++) {
denominator_r *= i;
}

for (int i = 1; i <= (n - r); i++) {
denominator_nr *= i;
}

result = numerator / (denominator_r * denominator_nr);
printf("%0.1f\n", result);

return 0;
}

Problem-15

#include <stdio.h>
int main() {
int x, y;
printf("Enter the value of x: ");
scanf("%d", &x);
printf("Enter the value of y: ");
scanf("%d", &y);
int result = 1;
for (int i = 1; i <= y; i++) {
result=result*x;
}
printf("answer:%d\n", result);
return 0;
}

Problem-16

#include <stdio.h>
int main() {
int num1, num2;
int newNUM1,newNUM2;
int GCD, LCM;

printf("Enter the first number: ");
scanf("%d", &num1);
printf("Enter the second number: ");
scanf("%d", &num2);

newNUM1 = num1;
newNUM2 = num2;

while (num2 != 0) {
int temp = num2;
num2 = num1 % num2;
num1 = temp;
}
GCD = num1;

LCM = (newNUM1 *newNUM2) / GCD;

printf("GCD of %d and %d is: %d\n", newNUM1,newNUM2, GCD);
printf("LCM of %d and %d is: %d\n", newNUM1,newNUM2, LCM);

return 0;
}

Problem-17

#include <stdio.h>
int main() {
int number;
int prime = 1;

printf("Enter a number: ");
scanf("%d", &number);

if (number <= 1) {
prime = 0;
}
else {
for (int i = 2; i * i <= number; i++) {

if (number % i == 0) {
prime = 0;
break;
}
}
}

if (prime == 1) {
printf("%d is a prime number.\n", number);
}
else {
printf("%d is not a prime number.\n", number);
}

return 0;
}

Problem-18

#include <stdio.h>

int main() {
int num, newnum, remainder, reverse = 0;

printf("Enter an integer: ");
scanf("%d", &num);
newnum = num;

while (num != 0) {
remainder = num % 10;
reverse = reverse * 10 + remainder;
num = num/10;
}

if (newnum == reverse) {
printf("Palindrome");
}
else {
printf("Not palindrome");
}

return 0;
}

Problem-19

#include <stdio.h>
#include <math.h>

int main() {
double x, result = 0;
int n, sign = 1;

printf("Enter the value of x in radians: ");
scanf("%lf", &x);

printf("Enter the number of terms in the series: ");
scanf("%d", &n);

for (int i = 1; i <= n; i += 2) {
double term = pow(x, i) / tgamma(i + 1);
result += sign * term;
sign *= -1;
}

printf("sin(%lf) = %lf\n", x, result);

return 0;
}

Problem-20

#include <stdio.h>
int main() {
int n, num = 0,sum = 0;

printf("Enter the number of terms: ");
scanf("%d", &n);

for (int i = 1; i <= n; i++) {
num = num * 10 + i;
printf("%d+",num);
sum += num;
}

printf("\nSum of the series up to %d terms: %d\n", n, sum);
return 0;
}

Problem-1

#include<stdio.h>
int main()
{
   double number ;
   printf("Enter a number:");
   scanf("%lf",&number);
   if(number>=0)
    printf("Positive");
   else
    printf("Negative");
   return 0;
}

Problem-2

#include<stdio.h>
int main()
{
   int number ;
   printf("Enter a number:");
   scanf("%d",&number);
   if(number%2==0)
    printf("Even");
   else
    printf("Odd");
   return 0;
}

Problem-3

#include <stdio.h>

int main() {
int digit;

printf("Enter a single digit (0-9): ");
scanf("%d", &digit);

switch (digit) {
case 0:
printf("Zero\n");
break;
case 1:
printf("One\n");
break;
case 2:
printf("Two\n");
break;
case 3:
printf("Three\n");
break;
case 4:
printf("Four\n");
break;
case 5:
printf("Five\n");
break;
case 6:
printf("Six\n");
break;
case 7:
printf("Seven\n");
break;
case 8:
printf("Eight\n");
break;
case 9:
printf("Nine\n");
break;
default:
printf("Invalid input.\n");
}
return 0;
}

Problem-4

#include<stdio.h>
int main()
{
 int a,b,c;
 printf("Enter Three angles:");
 scanf("%d%d%d",&a,&b,&c);
 if(a>0 && b>0 && c>0 && a+b+c==180)
    printf("Yes");
 else
    printf("No");
 return 0;
}

Problem-5

#include <stdio.h>
int main() {
unsigned int a;
printf("Enter a positive nonzero number: ");
scanf("%u", &a);
if (a > 0 && (a & (a - 1)) == 0)
printf("YES");
else
printf("NO");
return 0;
}

Problem-6

#include <stdio.h>

int main() {
int number;

printf("Enter a number: ");
scanf("%d", &number);

if (number > 0) {
if ((number & (number - 1)) == 0) {
printf("The number is a positive power of 2.\n");
} else {
printf("The number is positive but not a power of 2.\n");
}
} else if (number == 0) {
printf("Zero is not a valid input.\n");
} else {
printf("Negative input is not valid.\n");
}

return 0;
}

Problem-7

#include<stdio.h>
int main()
{
    int X,Y;
    printf("Enter Two Number:");
    scanf("%d%d",&X,&Y);
    if(X>Y)
    printf("%d is greater than %d",X,Y);
    else if(X<Y)
    printf("%d is less than %d",X,Y);
    else
    printf("%d is equal to %d",X,Y);
    return 0;
}

Problem-8

#include <stdio.h>

int main() {
int year;
printf("Enter a year: ");
scanf("%d", &year);
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) 
printf("YES");
else 
printf("NO");
return 0;
}

Problem-9

#include<stdio.h>
int main()
{
    char ch;
    printf("Enter Character:");
    scanf("%c",&ch);
    if(ch>='A'&& ch<='Z'||ch>='a'&& ch<='z')
        printf("Alpabet\n");
    else if (ch>='0'&& ch<='9')
        printf("Digit\n");
    else
        printf("Special");
    return 0 ;
}

Problem-10

#include <stdio.h>
int main() {
double num1, num2;
char operator;

printf("Enter an expression ( 7 + 3): ");
scanf("%lf %c %lf", &num1, &operator, &num2);

switch (operator) {
case '+':
printf("ADD: %lf\n", num1 + num2);
break;
case '-':
printf("SUB: %lf\n", num1 - num2);
break;
case '*':
printf("MULTI: %lf\n", num1 * num2);
break;
case '/':
if (num2 != 0) {
printf("DIVI: %lf\n", num1 / num2);
} else {
printf("Zero as divisor is not valid!.\n");
}
break;
default:
printf("Invalid operator.\n");
}

return 0;
}

Problem-11

#include <stdio.h>
int main() {
double finalScore;

printf("Enter the final score: ");
scanf("%lf", &finalScore);

if (finalScore >= 90) {
printf("Grade: A\n");
}
else if (finalScore >= 86) {
printf("Grade: A-\n");
}
else if (finalScore >= 82) {
printf("Grade: B+\n");
}
else if (finalScore >= 78) {
printf("Grade: B\n");
}
else if (finalScore >= 74) {
printf("Grade: B-\n");
}
else if (finalScore >= 70) {
printf("Grade: C+\n");
}
else if (finalScore >= 66) {
printf("Grade: C\n");
}
else if (finalScore >=62) {
printf("Grade: C-\n");
}
else if (finalScore >= 58) {
printf("Grade: D+\n");
}
else if (finalScore >= 55) {
printf("Grade: D\n");
}
else {
printf("Grade: F\n");
}

return 0;
}

Problem-12

#include <stdio.h>
int main() {
double a, b, result;
int choice;

printf("Enter two real numbers a and b: ");
scanf("%lf %lf", &a, &b);

printf("Choose an operation:\n");
printf("1. Addition\n");
printf("2. Subtraction\n");
printf("3. Multiplication\n");
printf("4. Division (quotient)\n");
scanf("%d", &choice);

switch (choice) {
case 1:
result = a + b;
break;
case 2:
result = a - b;
break;
case 3:
result = a * b;
break;
case 4:
if (b != 0) {
result = a / b;
} else {
printf("Division by zero is invalid.\n");
return 1;
}
break;
default:
printf("Invalid choice.\n");
return 1;
}

printf("Result: %lf\n", result);

return 0;
}

Problem-13

#include <stdio.h>

int main() {
double a, b, result;
int choice, caseChoice;

printf("Enter two real numbers a and b: ");
scanf("%lf %lf", &a, &b);

printf("Choose an operation:\n");
printf("1. Addition\n");
printf("2. Subtraction\n");
printf("3. Multiplication\n");
printf("4. Division (quotient and remainder)\n");
scanf("%d", &choice);

switch (choice) {
case 1:
result = a + b;
break;
case 2:
result = a - b;
break;
case 3:
result = a * b;
break;
case 4:
printf("Choose a case:\n");
printf("1. Quotient\n");
printf("2. Remainder\n");
scanf("%d", &caseChoice);
if (b != 0) {
if (caseChoice == 1) {
result = a / b;
} 
else if (caseChoice == 2) {
result = fmod(a, b);
}
 else {
printf("Invalid case choice.\n");
return 1;
}
} 
else {
printf("Error: Division by zero.\n");
return 1;
}
break;
default:
printf("Invalid choice.\n");
return 1;
}

printf("Result: %lf\n", result);

return 0;
}

Problem-14

#include <stdio.h>

int main() {
double a, b, result;
int choice, caseChoice;

printf("Enter two real numbers a and b: ");
scanf("%lf %lf", &a, &b);

printf("Choose an operation:\n");
printf("1. Addition\n");
printf("2. Subtraction\n");
printf("3. Multiplication\n");
printf("4. Division\n");
scanf("%d", &choice);

switch (choice) {
case 1:
result = a + b;
printf("Result: %lf\n", result);
break;
case 2:
result = a - b;
printf("Result: %lf\n", result);
break;
case 3:
result = a * b;
printf("Result: %lf\n", result);
break;
case 4:
if (b != 0) {
printf("Choose a case:\n");
printf("1. Quotient\n");
printf("2. Remainder\n");
scanf("%d", &caseChoice);
if (caseChoice == 1) {
result = a / b;
printf("Quotient: %lf\n", result);
} 
else if (caseChoice == 2) {
result = fmod(a, b);
printf("Remainder: %lf\n", result);
} 
else {
printf("Invalid case choice.\n");
}
} 
else {
printf("Error: Divisor is zero.\n");
}
break;
default:
printf("Invalid choice.\n");
}

return 0;
}

Problem-15

#include <stdio.h>

int main() {
int player1Number, player2Guess, chances = 3, flag = 0;

printf("Player-1, enter a number: ");
scanf("%d", &player1Number);

printf("Player-2, you have 3 chances to guess the number.\n");

while (chances > 0) {
printf("Enter your guess: ");
scanf("%d", &player2Guess);

if (player2Guess == player1Number) {
printf("Right, Player-2 wins!\n");
flag = 1;
break;
} else {
chances--;
if (chances > 0) {
printf("Wrong, %d Chance(s) Left!\n", chances);
}
}
}

if (flag == 0) {
printf("Player-1 wins!\n");
}

return 0;
}

Problem-1

#include<stdio.h>
int main()
{
    double A,B;

    printf("Enter two numbers:");
    scanf("%lf %lf",&A,&B);

    double addition= A+B;

    double subtraction = A-B;

    double multiplication=A*B;

    printf("Addition=%lf\nSubtraction=%lf\nMultiplication=%lf ",addition,subtraction,multiplication);

    /*printf("Addition: %lf\n", A + B);
    printf("Subtraction: %lf\n", A - B);
    printf("Multiplication: %lf\n", A * B);*/

    if (B != 0) {
        printf("Division - Quotient: %lf, Reminder: %lf\n", A / B, fmod(A, B));
    } else {
        printf("Division by zero is undefined.\n");
    }


    return 0;

}

Problem-2

#include<stdio.h>
#define Pi 3.1416
int main()
{
    double A;
    double r;

    printf("Enter the radius of the circle:");
    scanf("%lf",&r);

    A=2*Pi*r;

    printf("Area:%lf",A);

    return 0;
}

Problem-3

#include<stdio.h>
int main()
{
    double a,b;
    printf("Enter two numbers:");
    scanf("%lf %lf",&a,&b);

  double X=(3.31*a*a+2.01*b*b*b)/(7.16*b*b+2.01*a*a*a);
  printf("X=%lf",X);

   return 0 ;
}

Problem-4

#include<stdio.h>
int main()
{
    int X=5;

    printf("X++:%d\n",X++);
    X=5;
    printf("++X:%d\n",++X);
    X=5;
    printf("X--:%d\n",X--);
    X=5;
    printf("--X:%d\n",--X);
    return 0;
}

Problem-5

#include<stdio.h>
int main()
{
    int X=5;
    int Y=10;

    X+=Y;
    printf("Incremented by Y=%d\n",X);

    X-=Y;
    printf("Decremented by Y=%d\n",X);
    return 0;
}

Problem-6

#include<stdio.h>
int main()
{
    int X=56;
    int Y=10;

    X*=Y;
    printf("Multiplication =%d\n",X);

    X=56;
    X/=Y;
    printf("Division =%d\n",X);
    return 0;
}

Problem-7

#include <stdio.h>

int main() {
   int numInt = -150;
   float numFloat = 123.125;

   // Floating to integer conversion using:

   // a) Assignment operation:
   int intFromFloatAssign = numFloat;  // Fractional part is discarded
   printf("Integer from float (assignment): %d\n", intFromFloatAssign);

   // b) Type casting:
   int intFromFloatCast = (int)numFloat;  // Explicit type conversion
   printf("Integer from float (type casting): %d\n", intFromFloatCast);

   // Integer to floating conversion using:

   // a) Assignment operation:
   float floatFromIntAssign = numInt;  // Integer is automatically converted to float
   printf("Float from integer (assignment): %f\n", floatFromIntAssign);

   // b) Type casting:
   float floatFromIntCast = (float)numInt;  // Explicit type conversion
   printf("Float from integer (type casting): %f\n", floatFromIntCast);

   return 0;
}

Problem-8

#include<stdio.h>
int main()
{
    int num1,num2,maxnum;

    printf("Enter two numbers:");
    scanf("%d %d",&num1,&num2);

    maxnum=(num1>num2)?num1:num2;

    printf("Maximum=%d\n",maxnum);

    return 0;
}

Problem-9

#include <stdio.h>

int main()
 {
double a, b, c;

printf("Enter values for a, b, and c: ");
scanf("%lf %lf %lf", &a, &b, &c);

double X = a - b / 3.0 + c * 2 - 1;
double Y = a - (b / (3 + c) * 2) - 1;
double Z = a - ((b / 3) + c * 2) - 1;

printf("X: %lf\nY: %lf\nZ: %lf\n", X, Y, Z);

return 0;
}

Problem-10

#include <stdio.h>
int main()
{
double a, b, c;

printf("Enter values for a, b, and c: ");
scanf("%lf %lf %lf", &a, &b, &c);

int resultA=(a+b)<=80;
int resultB=!(a+c);
int resultC=a!=0;

printf("a)Result: %d\nb)Result: %d\nc)Result:%d\n", resultA,resultB, resultC);

return 0;
}

Problem-11

#include <stdio.h>

int main() {
int a, b, c;

printf("Enter values for a, b, and c: ");
scanf("%d %d %d", &a, &b, &c);

int resultA = ((a + b) <= 80) && (b >= 0);
int resultB = ((a - b) == 0) || (c != 0);
int resultC = (a != b) || ((b < a) && (c > 0));

printf("(a) Result: %d\n(b) Result: %d\n(c) Result: %d\n", resultA, resultB, resultC);

return 0;
}

Problem-12

#include <stdio.h>
#include <math.h>

int main() {
double a, b, c;

printf("Enter values for a, b, and c: ");
scanf("%lf %lf %lf", &a, &b, &c);

double discriminant = b * b - 4 * a * c;

if (discriminant > 0) {
double root1 = (-b + sqrt(discriminant)) / (2 * a);
double root2 = (-b - sqrt(discriminant)) / (2 * a);
printf("Root 1: %lf\nRoot 2: %lf\n", root1, root2);
} else if (discriminant == 0) {
double root = -b / (2 * a);
printf("Root: %lf\n", root);
} else {
printf("Imaginary.\n");
}

return 0;
}

Problem-13

#include <stdio.h>
#include <math.h>

int main() {
double x;

printf("Enter a value for x: ");
scanf("%lf", &x);
x = x * 3.1416 / 180;

double result = 2 * cos(x)*cos(x) - sqrt(3) * sin(x) + sin(x / 2);

printf("Result: %lf\n", result);

return 0;
}

Problem-14

#include <stdio.h>

int main() {
double X;

printf("Enter a floating-point number X: ");
scanf("%lf", &X);

double A = ceil(X);
double B = floor(X);
double C = fabs(X);

printf("A (Rounded Up): %lf\nB (Rounded Down): %lf\nC (Absolute Value): %lf\n", A, B, C);

return 0;
}

Problem-15

#include <stdio.h>

int main() {
printf("Size of int: %lu bytes\n", sizeof(int));
printf("Size of float: %lu bytes\n", sizeof(float));
printf("Size of double: %lu bytes\n", sizeof(double));
printf("Size of char: %lu byte\n", sizeof(char));

return 0;
}

Problem-1

#include<stdio.h>

int main ()
{
    printf("Hello World\n");

    return 0 ;
}

Problem-2

#include<stdio.h>

int main ()
{
    printf("Hello World.\nThis is my first program.\tC is fun.\n");

    return 0 ;
}

Problem-3

#include<stdio.h>
int main()
{
    printf("The question is-\"How to write a \n\\comment\/ in C progrannig language?\"\n");
    return 0 ;
}

Problem-4

#include<stdio.h>
int main()
{
    int integerVar;
    float floatVar;
    char charVar;

    integerVar=5 ;
    floatVar=3.141593;
    charVar='a';

    printf("The inetger value:%d\n",integerVar);
    printf("The floating point value:%f\n",floatVar);
    printf("The Character value:%c\n",charVar);
    return 0 ;
}

Problem-5

#include<stdio.h>
int main()
{
//Declare a variable uninitialized
 int uninitializedVar;

 //Declare and  initialize a variable in one statement
 int initializedVar=65;

 //Declare and initialize multiple variables with different values in one statement
 int Var1=65,Var2=75,Var3=85,Var4=95;

//Declare and initialize multiple variables with the same value in one statement
int sameVar1=20,sameVar2=20,sameVar3=20,sameVar4=20;

printf("a)Uninitialized variable:%d\n",uninitializedVar);

printf("b)Initialize  variable:%d\n",initializedVar);

printf("c)multiple variables with different values:%d, %d, %d, %d\n",Var1,Var2,Var3,Var4);

printf("d)multiple variables with same value:%d, %d, %d, %d\n",sameVar1,sameVar2,sameVar3,sameVar4);

return 0 ;

}

Problem-6

#include<stdio.h>
int main()
{
  int age;

  printf("Enter age:");

  scanf("%d",&age);

  printf("My age is :%d\n",age);

  return 0;



}

Problem-7

#include<stdio.h>
int main()
{
    int integerVar;
    float floatVar;
    char charVar;

    printf("Enter an Integer:");
    scanf("%d",&integerVar);

    printf("Enter a floating point value :");
    scanf("%f",&floatVar);

//Clear the newline character left in the input buffer
while(getchar()!='\n');

    printf("Enter a Character :");
    scanf("%c",&charVar);

    printf("The integer value:%d\n",integerVar);
    printf("The floating point value:%f\n",floatVar);
    printf("The character value:%c\n",charVar);

    return 0;
}

Problem-8

#include<stdio.h>
int main()
{

    int firstValue,lastValue;
    int middleValue;

    printf("Enter three integer value:");

    scanf("%d %*d %d",&firstValue,&lastValue);

    printf("First Value = %d ,Last Value = %d\n",firstValue,lastValue);

    return 0;

}

Problem-9

#include<stdio.h>
int main()
{
    double doubleVar=3.14159;
    int booleanVar= 1;

    printf("The double value:%lf\n",doubleVar);
    printf("The boolean value:%s\n",booleanVar? "true":"false");

    return 0;


}

Problem-10

#include <stdio.h>

int main() {
    long int longIntVariable = 1234567890L;         // A long int variable
    long long int longLongIntVariable = 1234567890123456789LL; // A long long int variable
    long double longDoubleVariable = 3.141592653589793238L;  // A long double variable
    short int shortIntVariable = 32767;              // A short int variable

    // Printing the values
    printf("The Long Int Value: %ld\n", longIntVariable);
    printf("The Long Long Int Value: %lld\n", longLongIntVariable);
    printf("The Long Double Value: %Lf\n", longDoubleVariable);
    printf("The Short Int Value: %d\n", shortIntVariable);

    return 0;
}

Problem-11

#include <stdio.h>

int main() {
    unsigned int unsignedIntVariable = 4294967295U;                     // An unsigned int variable
    unsigned long int unsignedLongIntVariable = 18446744073709551615UL; // An unsigned long int variable
    unsigned long long int unsignedLongLongIntVariable = 18446744073709551615ULL; // An unsigned long long int variable
    unsigned short int unsignedShortIntVariable = 65535U;               // An unsigned short int variable

    // Printing the values
    printf("Unsigned Int Value: %u\n", unsignedIntVariable);
    printf("Unsigned Long Int Value: %lu\n", unsignedLongIntVariable);
    printf("Unsigned Long Long Int Value: %llu\n", unsignedLongLongIntVariable);
    printf("Unsigned Short Int Value: %u\n", unsignedShortIntVariable);

    return 0;
}

Problem-12

#include<stdio.h>
int main()
{
    const float pi=3.1416;

    printf("The value of pi:%.4f\n",pi);

    return 0;

}

Problem-13

#include<stdio.h>
int main()
#define HEIGHT 100
{


    printf("The value of HEIGHT:%d\n",HEIGHT);

    return 0;

}

Problem-14

#include <stdio.h>

int globalVariable = 10; // Define a global variable

int main() {
    printf("A. Value of globalVariable before defining the local variable: %d\n", globalVariable);

    int globalVariable = 20; // Define a local variable with the same name

    printf("B. Value of globalVariable after defining the local variable: %d\n", globalVariable);

    {
        extern int globalVariable;
        printf("C. Value of globalVariable as global: %d\n", globalVariable);
    }

    return 0;
}

Problem-15

#include <stdio.h>

int main() {
    float floatValue;

    // Prompt the user for input
    printf("Please enter a floating-point number: ");

    // Read the floating-point number from the user
    scanf("%f", &floatValue);

    // (a) Print the number right-justified within 10 columns
    printf("(a) Right-justified within 10 columns: %10.6f\n", floatValue);

    // (b) Print the number right-justified to 2 columns
    printf("(b) Right-justified to 2 columns: %2.6f\n", floatValue);

    // (c) Print the number rounded to two decimal places
    printf("(c) Rounded to two decimal places: %.2f\n", floatValue);

    // (d) Print the number rounded to an integer (without conversion or type casting)
    printf("(d) Rounded to integer: %.0f\n", floatValue);

    // (e) Print the number in exponential notation (scientific notation)
    printf("(e) Exponential notation: %e\n", floatValue);

    return 0;
}