侯捷cpp-oop(下) 笔记

C++程序设计兼谈对象模型-导读 conversion function, 转换函数 class Fraction { public: Fraction(int num, int den=1) : m_numerator(num), m_denominator(den){}; operator double() const { return 1.0 * m_numerator / m_denominator; } private: int m_n...