矩阵rand



#include <stdio.h>                      

#include <stdlib.h>                     

                                               

#define M 5                            

#define N 5                            

                                               

int main(void)                          

{                                       

    int i = 0, j = 0;                   

    int a[M][N] = {{0}};              

                                               

    srand(time(NULL));                 

                                               

    for (i = 0; i < M; ++i)             

    {                                   

        for (j = 0; j < N; ++j)         

        {                               

            a[i][j] = rand() % 100;  

        }                               

    }                                   

                                               

    printf("a[%d][%d] is: \n", M, N);

    for (i = 0; i < M; ++i)             

    {                                   

        for (j = 0; j < N; ++j)         

        {                               

            printf("%d\t", a[i][j]);  

        }                               

        printf("\n");                   

    }                                   

    return 0;                           

}