Dev - C++ - Determine a que signo del zodiaco pertenece

#include <iostream>

using namespace std;

int main()

{

    int dia, mes;

    cout << "Dia: "; cin >> dia;

    cout << "Mes: "; cin >> mes;

    cout << "\nEl signo del zodiaco es: ";

    if (mes == 1)

    {

        if (dia < 21)

            cout << "Capricornio";

        else

            cout << "Acuario";

    }

    else if (mes == 2)

    {

        if (dia < 20)

            cout << "Acuario";

        else

            cout << "Piscis";

    }

    cout << endl;

    return 0;

}