二维数组的调用方式

#include <stdio.h>

void print_2DArray(int a[][4],int row)  //int a[][4] -> int (*a)[4]
{
    int col = sizeof(*a)/sizeof(int);
    printf("col = %d
",col);
    int i = 0;
    int j = 0;
    printf("sizeof a = %d
",sizeof(a));
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            printf("%d
",a[i][j]);
        }
    }
}

int main(void)
{
    int a[3][4] = {{1,2,3,4},{5,6,7,8},{9,10,11,12}};

    print_2DArray(a,3);

    printf("----end----
");
    return 0;
}