Write a program class circle that calculate and display circumference of circle.

                                                 

Write a program class circle that calculate and display circumference of circle.

#include <iostream>

#include <conio>

#Include <stdlib>

class circle

     

{

public:

float a,c,r;

public:

void setradius(r)

{

cout<<endl<<endl;

cout<<"                          Set Radius                         "<<endl;

cout<<endl<<endl;

cout<<"\t\t\t\t"<<r<<endl;

}

void area(r)

 {

a=3.14*r*r;

cout<<endl<<endl;

cout<<"             Area of The Circle is          :\t\t"<<a<<endl;

 }

void circum(r)

 {

c=2*3.14*r;

cout<<endl<<endl;

cout<<"             Circumference Of The Circle is :\t\t"<<c<<endl;

  }   };

void main()

{

circle cr;         //object of class

int b;

cout<<endl<<endl;

cout<<"                          Get Radius                         "<<endl;

cout<<endl<<endl;

cout<<"             Enter The Radius    :\t\t";

cin>>b;

cr.setradius(b);   //function call of setradius

cr.area(b);        //function call of area

cr.circum(b);      //function call of circumference

getch();

}

OUT PUT:

C++ Area and Circumference of Circle