#include <iostream>
#include <string>
using namespace std;

/* 
	Area 
	calculation 
	program 
*/

int main()
{
	float       radius;
	//float 	area;
	string 		myname;

	cout << "Please enter your name: ";
	cin >> myname;

	cout << "Hello " << myname 
		 << "! Welcome to my area calculation program" << endl;
	cout << "Please enter the radius of your circle: ";
	cin >> radius;
	
	//area = 3.14 * radius * radius;
	//cout << "the area is: " << area << endl;

	cout << "the area is: " << 3.14 * radius * radius << endl;
	  
	//radius = 3.14 * radius * radius;
	//cout << "the area is: " << radius << endl;
	return 0;
}