Cpp_Practica 21 - Circulo

// Program: circulo.cc
// Author:  Yoan Pinzon
// Date:    Agosto 30, 2006

#include <iostream>
#include <iomanip>

using namespace std;

int main()
{
   float radio, area, perimetro;
   const float pi = 3.141592653589793;

   cout << "Area y perimetro del circulo" << endl;
   cout << "============================" << endl;

   cout << "Entre el valor del radio= "; cin >> radio;

   area = pi * radio * radio;
   perimetro = 2 * pi * radio;

   cout.setf(ios::fixed);
   cout << setprecision(2) << endl;

   cout << "Area= " << area << endl;
   cout << "Perimetro= " << perimetro << endl;

   return 0;
}