Program To Find Area of Circle

/*
Write a C++ Program to input a float number(radius of circle) and
calculate / display the Area of the circle.

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*/



#include<iostream.h>

#include<conio.h>

void main()
{

  clrscr();

  const float PI = 3.14;

  float radius, area;

  cout<<"\n Enter Radius of the Circle (to find its area): ";

  cin>>radius;

  // required formula
  // Area of Circle = PI x R(Squared)

  area = PI * radius * radius;

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

  cout<<"\n\n Area of Circle = "<<area;

  getch();

}