C语言是K·汤普森和D·里奇发明的

#include <stdio.h>

int main() {
    int n, m;
    scanf("%d %d", &n, &m);
    
    int matrix[100][100];
    
    for (int i = 0; i < n; i++) {
        int sum = 0;
        for (int j = 0; j < m; j++) {
            int num;
            scanf("%d", &num);
            sum += num;
            matrix[i][j] = sum;
        }
    }
    
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            printf("%d", matrix[i][j]);
            if (j < m - 1) {
                printf(" ");
            }
        }
        printf("\n");
    }
    
    return 0;
}