Operator Overloading Using a Friend Function

Operator++

/*
 * Source.cpp
 *
 *  Created on: 03-Jun-2015
 *      Author: omkarnathsingh
 */


#include<iostream>
using namespace std;

class Complex
{
	int a,b;

public:
	//Constructors
	Complex() {
		a=0; b=0;
	}

	Complex(int m,int n) {
		a=m;
		b=n;
	}


	void display() 	{
		cout<<"\nReal Part: "<<a;
                cout<<"\tImaginary Part: "<<b<<" i";
	}

	//Prototypes
	//to pass operand as reference parameter
	Complex operator=(Complex op2);
	//prefix version
	friend Complex operator++(Complex &op);
	//postfix version
	friend Complex operator++(Complex &op,int x);
	
};

Complex Complex::operator=(Complex op2) {
		a=op2.a;
		b=op2.b;
		return *this;
	}

Complex operator++(Complex &op) {
		op.a++;
		op.b++;
		return op;
	}

Complex operator++(Complex &op,int x) {
		op.a++;
		op.b++;
		return op;
	}

int main()
{
	Complex ob1;
	ob1.display();
	++ob1;
	ob1.display();
	ob1++;
	ob1.display();
	return 0;
}