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C ++ Program to read radius of a circle to calculate area and perimeter to display them

In C++ Program you can easily write a code to read the radius of a circle to calculate the area of the circle and the perimeter of the circle.

Let's have a look at the C ++ Program to read radius of a circle to calculate area and perimeter to display them 

#include <iostream.h>
#include <stdlib.h>
int main ()
{ system ("cls")
double radius, area, perimeter ;
cout<<"Enter Radius of the circle : ";
cin>>radius ;
perimeter = 2 * 3.14159 * radius ;
area = 3.14159 * radius * radius ;
cout <<"The area of the circle is" ;
cout<< area ;
cout<<"\n The perimeter of the circle is : " ;
cout<< perimeter ;
return 0 ;
}

Out Put of the Above C++ Code 

C++ Code for Circle area and Perimeter Output
C++ Code for Circle area and Perimeter Output


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