Implementation of Unary & Binary operator overloading using member function.

#include<iostream.h>

#include<conio.h>

class point     //class for unary operator overloading

{

private:

int x,y;

public:

point(int i,int j)

{

x=i;

y=j;

}

void show()

{

cout<<"point="<<"("<<x<<","<<y<<")"<<endl;

}

void operator++()

{

x++;

y++;

}

};

class complex        //class for binary operator overloading

{

private:

double x,y;

public:

void input()

{

double p,q;

cout<<"enter the real part"<<endl;

cin>>p;

cout<<"enter the imaginary part"<<endl;

cin>>q;

x=p;

y=q;

}

void show()

{

cout<<"complex no. is"<<x<<"+i"<<y<<endl;

}

complex operator+(complex &c)

{

complex z;

z.x=x+(c.x);

z.y=y+(c.y);

return(z);

}

complex operator*(complex &c)

{

complex z;

z.x=x*c.x-y*c.y;

z.y=x*c.y+y*c.x;

return(z);

}

};

void main()

{

clrscr();

point p1(2,2);

p1.show();

 cout<<"after increment"<<endl;
++p1;

p1.show();

complex c1,c2,c3;

c1.input();

c1.show();

c2.input();

c2.show();

c3=c1+c2;

cout<<"after addition"<<endl;

c3.show();

c3=c1*c2;

cout<<"after multiplication"<<endl;

c3.show();

getch();

}

//For any errors pls post comment.....