指针数组与数组指针

指针数组：array of pointers，即用于存储指针的数组，也就是数组元素都是指针。例如int *a[3];

数组指针：a pointer to an array，即指向数组的指针。例如 int (*b)[3];

具体使用场景如下：

#include <iostream>
using namespace std;

int main()
{
    int x = 1, y = 2, z = 3;
    int *a[3] =  {&x, &y, &z};
    cout << *(a[0]) << " " << *(a[1]) << " " << *(a[2]) << endl;
    int c[3] = {4,5,6};
    int (*b)[3] = &c;
    cout << (*b)[0] << " " << (*b)[1] << " " << (*b)[2] << endl; 
    return 0;
}

输出如下：