f0312.cpp

it is a usefull thing

//=====================================
// f0312.cpp
// 空间实体的理解
//=====================================
#include<iostream>
using namespace std;
//-------------------------------------
int main(){
  float f = 34.5;
  int* ip = reinterpret_cast<int*>(&f);
  cout<<"float address: "<<&f<<"=>"<<f<<endl;
  cout<<"  int address: "<<ip<<"=>"<<*ip<<endl;
  *ip = 100;
  cout<<"  int: "<<*ip<<endl;
  cout<<"float: "<<f<<endl;
}//====================================