C++ Program To Find Area And Circumference Of Circle

#include<iostream>
using namespace std;
int main()
{
int rad;

float PI = 3.14, area, ci;
cout<<"Enter radius of circle: ";
cin>>rad;
area = PI * rad * rad;
cout<<"Area of circle "<< area<<endl;
ci = 2 * PI * rad;
cout<<"Circumference of circle "<< ci<<endl;
return (0);
}

Output:

Enter radius of circle: 50

Area of circle 7850

Circumference of circle 314