指针数组和数组指针

指针数组：数组的每一个元素都是指针，故所占内存的小和机子位数有关。
数组指针：数组的指针，即指向一个数组的指针就是数组指针，对应的是二维数组。

具体就不细说了，主要是分得清，不要弄混了，直接看下面的例子

例子

#include<iostream>

using namespace std;

int main()
{
    //定义数组
    int arr1[3];
    int arr2[3][10];

    //数组指针
    int *p1 = arr1;
    int(*p2)[10] = arr2;

    //首地址
    cout << arr1 << " " << p1 << " " << &arr1[0] << " " << &p1[0] << endl;
    //第二行的首地址
    cout << arr1 + 1 << " " << p1 + 1 << " " << &arr1[1] << " " << &p1[1] << endl;

    //首地址
    cout << arr2 << " " << p2 << " " << p2[0] << " " << &p2[0][0] << endl;
    //第二行的首地址
    cout << arr2 + 1 << " " << p2 + 1 << " " << p2[1] << " " << &p2[1][0] << endl;
    //arr2[1][1]的地址
    cout << arr2[1] + 1 << " " << p2[1] + 1 << " " << &p2[1][1] << " " << &(*(*(p2 + 1) + 1)) << endl;

    //指针数组，下面三种写法效果一样
    int *(n1[10]); //指针大小32位机为4,64位机为8
    int *(n2)[10];
    int *n3[10];

    cout << sizeof(n1) << " " << n1 << " " << n1 + 1 << " " << &n1[2] << endl;
    cout << sizeof(n2) << " " << n2 << " " << n2 + 1 << " " << &n2[2] << endl;
    cout << sizeof(n3) << " " << n3 << " " << n3 + 1 << " " << &n3[2] << endl;

    system("pause");
    return 0;
}

运行结果：