#include<iostream>
using namespace std;

class A
{
	public:
		A(){}
		A(int x){}
		A(char c){}
		A(char* p){}

		void fun(A a, A b)
		{
			cout << "fun";
		}
};

void main()
{
	A a1, a2, a3;
	a1.fun( 5, 8 );
	a1.fun( 'a', 'b' );
	a1.fun( "mom", "dad" );
	a1.fun( a2,a3 );
}