How to calculate the sum of each row in a two-dimensional array in C language?

To find the sum of each row in a two-dimensional array, you can use nested loops to iterate through each row and calculate the sum. Here is an example code:

#include <stdio.h>

int main() {
    int rows, cols;
    
    printf("Enter the number of rows: ");
    scanf("%d", &rows);
    
    printf("Enter the number of columns: ");
    scanf("%d", &cols);
    
    int arr[rows][cols];
    
    // Input values into the array
    printf("Enter the elements of the array:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            scanf("%d", &arr[i][j]);
        }
    }
    
    // Calculate the sum of each row
    for (int i = 0; i < rows; i++) {
        int sum = 0;
        for (int j = 0; j < cols; j++) {
            sum += arr[i][j];
        }
        printf("Sum of row %d: %d\n", i+1, sum);
    }

    return 0;
}

In this example, we first input the number of rows and columns in a 2D array, followed by inputting the elements of the array. Then, we use a nested loop to iterate through each row, calculate the sum of each row, and finally output the sum of each row.