随机数的产生--5*5矩阵

#include 
#include 

#define N 5
#define M 5

int main()
{
    int a[N][M];
    int i, j;

    srand((unsigned)time(NULL));

    for (i = 0; i < N; i++)
    {
        for (j = 0; j < M; j++)
        {
            a[i][j] = rand()%100;
            printf("%5d%c",a[i][j],((4-j)?(' '):('\n')));
        }
    }
    return 0;
}

 

结果