#include<iostream>

using namespace std;

class C
{
	public:
		void operator()();
		void operator()(int x);
		void operator()(int x, int y, int z);
		void operator()(int x, int y, int z)const;

		// then all of your other stuff

	private:
		//private stuff
};

void C::operator()()
{
	cout << "operator () with no parameters" << endl;
}

void C::operator()(int x)
{
	cout << "operator () with 1 parameters" << endl;
}

void C::operator()(int x, int y, int z)
{
	cout << "operator () with 3 parameters" << endl;
}

void C::operator()(int x, int y, int z)const
{
	cout << "const operator () with 3 parameters" << endl;
}

void main()
{
	C object;

	object();

	object(1);
	object(1,1,1);

	const C Const_Object;

	Const_Object(1,1,1);
	
	// you can not call non-const member functions using a const object
	//Const_Object();
	//Const_Object(1);
}