Thread: Additon in Array for specific column

The first step is to indent your code properly, so you (and everyone else) can see the program flow at a glance.

Code:

#include <stdio.h>

int main()
{
    int marks[4][4];
    int j;
    int i;
    int sum = 0;
    int average = 0;

    printf("Enter the marks of 4 students :- \n");
    for (j = 0; j < 4; j++)
        for (i = 0; i < 4; i++)
        {
            printf("Marks of student [%d] [%d] : ", j, i);
            scanf("%d", &marks[j][i]);
        }

    for (j = 0; j < 4; j++)
        for (i = 0; i < 4; i++) {
            sum = sum + marks[j][i];
        }
    average = sum / 4;
    printf("Sum Of Column1: %d\n", sum);
    printf("Average Of Column1: %d\n", average);
    return 0;
}

If you only want to sum column 0, then remove the inner loop and sum marks[j][0].