#include <iostream>  using namespace std;  int main()  {      int a[3] = {1, 2, 3};    cout << *(a) << std::endl;    cout << *(a+ 1) << std::endl;    cout << *(a + 2) << std::endl;    cout << *(&a[0] + 0) << std::endl;    cout << *(&a[0] + 1) << std::endl;    cout << *(&a[0] + 2)  << std::endl;    int addr = (int)a;//直接用地址操作    cout << *(int*)addr << endl;    cout << *(int*)(addr+ 4) << endl;    cout << *(int*)(addr+8) << endl;    getchar();    return 0;    //可以看出数组名a的值就是&a[0]，代表了第一个元素的首地址，+1直接访问下一个元素的}