Slip 21 - B) Create a C++ class for a two dimensional points. Write necessary member functions to accept & display the point object. Overload the following operators: Operator Example Purpose + (Binary) P3=P1+P2 Adds coordinates of point pl and p2. - (Unary) -Pl Negates coordinates of point p1. *(Binary) P2=P1*n Multiply coordinates of point pl by constant ‘n’.

Solution:

#include<iostream>

#include<conio.h>

using namespace std;

class point

 

{

int x,y;

public:

void get()

{

cout<<"\nEnter 2-Dimensional points: ";

cin>>x>>y;

}

 

void disp()

{

cout<<x<<"\t"<<y<<"\t"<<endl;

}

 

point operator+(point &t)

{

point tp;

tp.x=x+t.x;

tp.y=y+t.y;

return tp;

}

void operator -()

{

x=-x;

y=-y;

disp();

}

void operator *()

{

int n;

cout<<"Enter value of n:\n";

cin>>n;

x=-x;

y=-y;

x=x*n;

y=y*n;

disp();

}

};

int main()

{

point p1,p2,p3;

int ch;

p1.get();

p2.get();

 

cout<<"\nFirst 2-Dimensional point: ";

p1.disp();

cout<<"\nSecond 2-Dimensional point: ";

p2.disp();

do{

    cout<<"1 Addition\n";

    cout<<"2 Negates coordinates of point p1\n";

    cout<<"3 Mltiplication of coordinates of point pl by constant ‘n’\n";

    cout<<"4 Exit\n";

    cin>>ch;

    switch(ch)

    {

    case 1: p3=p1+p2;

    cout<<"\nAdded point: ";

    p3.disp();

    break;

    

    case 2: cout<<"\n\nNegated co-ordinate of p1: ";

            -p1;

            break;

    

    case 3: *p1;

    break;

    case 4:exit(0);

    }

}while(ch!=4);

return 0;

}