Named Return Value Optimization

NRVO.cpp

#include <iostream>  
using namespace std;

class OBJECT  
{  
    public:   
    const char *a;  
    OBJECT()  
     { 
         cout<<"Constructor"<<endl; 
     }  
    OBJECT(const char *ptr)  
     { 
         cout<<"Constructor"<<endl; 
     }  
    OBJECT(OBJECT  &obj)  
     { 
         cout<<"copy constructor"<<endl;
     }  
    OBJECT(OBJECT&& obj)  
    { 
        cout<<"Move constructor"<<endl; 
    }  
    ~OBJECT()  
    { 
        cout<<"Destructor"<<endl; 
    }  
};

OBJECT func1()  
{ 
    OBJECT obj; return obj; 
}  
int main()  
{  
    OBJECT object;  
    OBJECT obj1(func1());    //NRVO   
    return 0;  
}