8.Write a program to compute the addition of n × m matrices.

// Write a program to compute the addition of n × m matrices.
#include<stdio.h>
int main()
{
    int n, m;
    scanf("%d%d", &n, &m);
    int a1[n][m], a2[n][m], sum[n][m];
    // input matrix a1
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
            scanf("%d", &a1[i][j]);
    }
    // input matrix a2
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
            scanf("%d", &a2[i][j]);
    }
    // Computing
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
        {
            sum[i][j] = a1[i][j] + a2[i][j];
        }
    }
    // print addition of n × m matrices
    for (int i = 0; i < n; ++i)
    {
        for (int j = 0; j < m; ++j)
            printf("%d ", sum[i][j]);
        printf("\n");
    }
    return 0;
}