C语言复习---获取矩阵的对角和

 

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define MAX 5

int main()
{
    int a[MAX][MAX] = { 0 };
    int total = 0;

    //初始化数据
    for (int i = 0; i < MAX; i++)
    {
        for (int j = 0; j < MAX;j++)
        {
            a[i][j] = rand() % 100;
        }
    }

    //显示数据
    for (int i = 0; i < MAX; i++)
    {
        for (int j = 0; j < MAX; j++)
        {
            printf("%5d ", a[i][j]);
        }
        printf("\n");
    }

    //获取矩阵的对角值和
    for (int i = 0; i < MAX; i++)
    {
        total += a[i][i];
        if (i!=MAX-1-i)
            total += a[i][MAX-1-i];
    }

    printf("%d", total);

    system("pause");
    return 0;
}