#include <iostream>
#include <string.h>
#define MAX_LEN 255
using namespace std;

class Unit{
 
public:
 char *pszName;
 Unit(){
  pszName=new char[MAX_LEN];
  cout<<"Normal Constructor\n";
 }
 ~Unit(){
  if(!pszName) delete [] pszName;
 }
 void print(){
  cout<<pszName<<endl;
 }
 void set(char *a){
  strcpy(pszName,a);
 }
 Unit &operator=(Unit &right);
};
Unit &Unit::operator=(Unit &right){
 cout<<"operator called"<<endl;
 strcpy(pszName,right.pszName);
 return *this;
}
int main(){
 Unit Zerg,Spawn;
 Zerg.set("Zergling");
 Zerg.print();
 Spawn=Zerg;
 Spawn.print();
}

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치환연산을 클래스 단위로 하였을때

operator=가 실행된다.