/*
This functions returns the area of a circle.
*/
#include <iostream>
using namespace std;
float area(float radius);
int main()
{
	float radius;
	cout << "Enter the radius: ";
	cin >> radius;
	cout << "The area is: " << area(radius) << endl;
	return 0;
}

float area(float radius)
{
	/*float a = 3.14 * radius * radius;
	return a;
	*/
	return 3.14 * radius * radius;
}