Question

Could u help me in this:
write a program that ask a user to input radius of circle and display area of a circle.
( the question is asked from qbasic)

Answer 1

Answer:

#include <iostream>

#define PI 3.14159

using namespace std;

   int main()

   {

    float radius, area, circum;

 cout << "\n\n Find the area and circumference of any circle :\n";

 cout << "----------------------------------------------------\n";  

       cout<<" Input the radius(1/2 of diameter) of a circle : ";

    cin>>radius;

 

 circum = 2*PI*radius;

 area = PI*(radius*radius);

       cout<<" The area of the circle is : "<< area << endl;

       cout<<" The circumference of the circle is : "<< circum << endl;  

 

       cout << endl;

       return 0;

   }