//	File Name: hw2circle.cpp
//	Author: Maggie Smith
//	Instructor: Dr. John Wang
//	Due Date: Sept. 12, 2007
//	Compilation: g++ hw2circle.cpp -o hw2circle.out
//	Execution: ./hw2circle.out
//
//	Goal: This program will promt a message and let the user input the 
//	radius of a circle and then will output the area and circumference 
//	of the circle to the monitor.

#include <iostream>

using namespace std;

int main()
{
	// 1. declare variables
	float radius, area, circumference;
	string star_line = "****************************************";
	
	// 2. input
	cout << star_line;
	cout << "\n\nPlease input the length of radius: ";
	cin >> radius;

	// 3. computing
	area = 3.14 * radius * radius;
	circumference = 3.14 * 2 * radius;

	// 4. output
	cout << "The area of the circle is: " << area << endl;
	cout << "The circumference of the circle is: " << circumference << 
	"\n\n\n";
	cout << star_line << endl;

	return 0;

}