struct TwoRealNums
{
    double n1;
    double n2;
};

TwoRealNums CircLengthArea(int R)
{
    // Length = 2 * pi * R
    // Area = pi * R^2
    TwoRealNums result;
    result.n1 = 2.0 * 3.141592653589793 * R;      // length
    result.n2 = 3.141592653589793 * R * R;        // area
    return result;
}