计算概论题目（C语言）

Question

Answer 1

#include <stdio.h>
#include<stdlib.h> 
int main() {
    int m, n;
    scanf("%d %d", &m, &n);
    int **a, **b, **c;
    a=(int **)malloc(sizeof(int*)*m);
    for (int k = 0; k < m; k++)
        a[k] = (int*)malloc(sizeof(int)*n);
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j < n; j++)
            scanf("%d", &a[i][j]);
    }
    printf("\n");
    b = (int **)malloc(sizeof(int*)*m);
    for (int k = 0; k < m; k++)
        b[k] = (int*)malloc(sizeof(int)*n);
    for (int i = 0; i<m; i++)
    {
        for (int j = 0; j<n; j++)
            scanf("%d", &b[i][j]);
    }
    printf("\n");
    for (int i = 0; i<m; i++)
    {
        for (int j = 0; j<n; j++)
        {
            a[i][j] = a[i][j] - b[i][j];
            printf("%d ", a[i][j]);
        }
        printf("\n");
    }
    for (int i = 0; i < m; i++)
    {
        free(a[i]);
        free(b[i]);
    }
    free(a);
    free(b);
    system("pause");
    return 0;
}