Program OverLoading

#include <iostream.h>

#include <stdlib.h>

class complex

{

    double real;

    double imaginer;

public:

    complex(double re=0, double im=0)

    {

        real = re;

        imaginer = im;

    }

    complex operator-()

    {

        complex result;

        result.real = -real;

        result.imaginer = -imaginer;

        return result;

    }

    complex operator+(complex c)

    {

        complex result;

        result.real = real + c.real;

        result.imaginer = imaginer + c.imaginer;

        return result;

    }

    complex operator-(complex c)

    {

        complex result;

        result.real = real - c.real;

        result.imaginer = imaginer-c.imaginer;

        return result;

    }

        complex operator*(complex c)

    {

        complex result;

        result.real = real * c.real;

        result.imaginer = imaginer*c.imaginer;

        return result;

    }

    void display()

    {

        cout <<'(' << real << ',' << imaginer << ')' << endl;

    }

};

int main()

{

    complex z (1,2), w(3,4), b;

    complex a = z + w;

    a.display();

    a = z - w;

    a.display();

    b=-a;

    b.display();

    a = z * w;

    a.display();

    system ("pause");

    return 0;

}