C++ overloading Sample

C++ overloading
Def:  the same class , the same method, but different argument .
        function , friend function , constructor , member function can implement "Overloading".






#include<iostream>
using namespace std;



class Base{
      friend void Base_friend( Base &T ,int a);
      friend void Base_friend( Base &T ,int a , int b);
private:

    int x;      
       
public:
    Base()
    {
         cout << "Base Construster" << endl;
    }  
   
    Base (int _x)   //Base Constructor overloading
    {
         cout << "Base Constructor overloading" << endl;
         x=_x;
         cout << "x=" << x << endl;
       
    }

    void People()
    {
      cout<< "Base People" << endl;  
    }                
   
    void People(int a)   // member function overloading  
    {
       cout << "People" <<" "<< a << endl;
    }
   

     
     
};

//friend function
void Base_friend( Base &friend_obj ,int a)
{
  friend_obj.x = a;
  cout << "Base_friend x="<<friend_obj.x << endl;    
   
}  

//friend function
void Base_friend( Base &friend_obj ,int a , int b)
{
  friend_obj.x = a;
  cout << "Base_friend overloading x="<<friend_obj.x << endl;
  cout << "b =" << b << endl;
   
}
///////////////////////////////////////////////////////////////////
// function overloading
void People()
{
    cout<< "People" << endl;
}

void People (int x)
{
   cout << "People" << " "<< x << endl;
}  


////////////////////////////////////////////////////////////////////
int main()
{
People();
People (30);
Base obj;
obj.People();
obj.People(7);
Base obj1(2);
Base_friend(obj1 ,8);
Base_friend(obj1 ,8 , 10);
system("PAUSE");
    return 0;
}