间接修改指针的地址
代码：
//testforapointer.cpp:Definestheentrypointfortheconsoleapplication.
//
#include\"stdafx.h\"
#include<iostream>
usingnamespacestd;
typedefstruct
{
int*p;
}Test;
intmain()
{
int*p;
//p[0]=4;
//p[1]=3;

Testtest;

p=(int*)&test;

p[0]=1;
cout<<\"p[0]=\"<<p[0]<<endl;
cout<<\"test.i=\"<<test.p<<endl;
return0;
}