c语言中利用二维数组统计考试成绩之和

 

1、

#include <stdio.h>

int main(void)
{
    int a[4][3] = {{50,60,40},{80,70,60},{60,70,70},{90,80,70}};
    int b[4][3] = {{40,60,80},{20,70,90},{60,80,90},{50,20,40}};
    int i, j;
    int sum[4][3];
    
    for (i = 0; i < 4; i++)
    {
        for (j = 0; j < 3; j++)
        {
            sum[i][j] = a[i][j] + b[i][j];
        }
    }
    
    puts("first examination");
    for (i = 0; i < 4; i++)
    {
        for (j = 0; j < 3; j++)
        {
            printf("%d ", a[i][j]);
        }
        putchar('\n');
    }
    puts("-------------\n-------------");
    puts("second examination");
    for (i = 0; i < 4; i++)
    {
        for (j = 0; j < 3; j++)
        {
            printf("%d ", b[i][j]);
        }
        putchar('\n');
    }
    puts("-------------\n-------------");
    puts("sum");
    for (i = 0; i < 4; i++)
    {
        for (j = 0; j < 3; j++)
        {
            printf("%d ", sum[i][j]);
        }
        putchar('\n'); 
    }
    return 0;
    
}