C/C++对数组的引用——指向指针的指针和指针引用

#include <iostream>
using namespace std;

void main()
{
int a = 10;
int **pTest = new int*;
int *pSec = &a;
pTest = &pSec;
*pTest = pSec;
cout<<*pTest<<endl;
cout<<pSec<<endl;
cout<<**pTest<<endl;

//修改一个指针的值
*pSec = 100;
cout<<**pTest<<endl;

//测试引用
int &b = a;
cout<<b<<endl;
b = 1000;
cout<<a<<' '<<b<<endl;
//int *&pRef = &a;//error.
int*pRef = &a;
int* &pNef = pRef;
//修改变量a的值
*pRef = 2000;//通过指针修改a的值
cout<<a<<endl; //a的值被修改
*pNef = 3000;
cout<<a<<endl;//通过指针的引用修改变量a的值
cout<<pRef<<endl;
}