模板

template<typename T>
class Complex
{
public:
    Complex(T r = 0, T i = 0)
        : re(r), im(i)
    { }
    Complex operator =(const Complex);
    T real() const { return re; }
    T imag() const { return im; }
private:
    T re;
    T im;
};

template <class T> const T& min(const T& a, const T& b)
{
    a < b ? a : b;                
}