Combustión de Alcanos

// Combustion de Alcanos
// Ajusta w CnHn+2 + x O2 ---> y H2O + z CO2

#include <iostream.h>

int main(){
    int n, w, x, y, z;

    do{
        cout << " \n Introduce el numero de carbonos de tu alcano: ";
        cin >> n;

        if( n%2==0 ) w=2;
        else w=1;

        z=w*n;
        y=w*(n+1);

        if( n%2==0 ) x=3*n+1;
        else x=(y+(2*z))/2;

        cout << " " << w << " C" << n << "H" << 2*n+2 << " + " << x << " O2 ---> " << y << " H2O + " << z << " CO2 \n";
    }while( n>0 );

    return 0;
}