示例程序：

#include <iostream>
#include <stdio.h>
int main()
{


    int a[3][4] = {
        {1,2,3,4},
        {2,3,4,5},
        {3,4,5,6}
    };

    int b[3][4] = {
        {10,11,12,13},
        {11,12,13,14},
        {12,13,14,15}
    };

    int(*aa[2])[4] = { a,b };
    int* p1[3] = {a[0],a[1],a[2]};
    int* p2[3] = {b[0],b[1],b[2]};

    int** pp[2] = { p1,p2 };
    int*** p = pp;

    printf("%d\n", (*(*p + 2))[1]); //a[2][1]
    printf("%p  %p\n", aa[1][2] ,aa[1][0]);
    printf("%ld\n", aa[1][2] - aa[1][0]); //b[2]- b[0]

    std::cout << "Hello World!\n";
}

内存位置示意图：

运行结果：