Punto 7

#include "stdafx.h"
#include <iostream>
#include <cstdlib>

using namespace std;
double calculoPi()
{
    double  vrPi = 0.0;
    int i= 2;

    while (abs(vrPi * 4 -3.1416) > 0.00001)
    {
        double aux1 =  ((2.0*i)-2)/(2.0 * i - 1.0);
        double aux2 =  ((2.0*i))/(2.0 * i - 1.0);
        vrPi += aux1 * aux2;
        if(aux1 != aux2){
        return vrPi;
        }
        i++;
    }

    return vrPi * 4;
}


int _tmain(int argc, _TCHAR* argv[])
{
    cout <<"Valor de PI calculado: " << calculoPi() <<endl;
    system ("Pause");
    return 0;
}