间接修改指针的地址技巧

 // test for a pointer.cpp : Defines the entry point for the console application.
//
#include \"stdafx.h\"
#include <iostream>
using namespace std;
typedef struct
{
 int *p;
}Test;
int main( )
{
 int *p;
//      p[0] = 4;
// p[1] = 3;

 Test test;

 p = (int *)&test;

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