文件名称:8_8
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已知一个有理数类Zrf_Ratio，实现如下的操作符重载形式：
friend std::ostream& operator< (std::ostream&, const zrf_Ratio&)
friend std::istream& operator>>(std::istream&, zrf_Ratio&)
friend bool operator==(const zrf_Ratio&, const zrf_Ratio&)
friend bool operator<(const zrf_Ratio&, const zrf_Ratio&)
-Known type of a rational number Zrf_Ratio, the achievement of the following form of operator overloading: friend std:: ostream & operator < < (std:: ostream & , const zrf_Ratio & ) friend std:: istream & operator> > (std:: istream & , zrf_Ratio & ) friend bool operator == (const zrf_Ratio & , const zrf_Ratio & ) friend bool operator < (const zrf_Ratio & , const zrf_Ratio & )
friend std::ostream& operator< (std::ostream&, const zrf_Ratio&)
friend std::istream& operator>>(std::istream&, zrf_Ratio&)
friend bool operator==(const zrf_Ratio&, const zrf_Ratio&)
friend bool operator<(const zrf_Ratio&, const zrf_Ratio&)
-Known type of a rational number Zrf_Ratio, the achievement of the following form of operator overloading: friend std:: ostream & operator < < (std:: ostream & , const zrf_Ratio & ) friend std:: istream & operator> > (std:: istream & , zrf_Ratio & ) friend bool operator == (const zrf_Ratio & , const zrf_Ratio & ) friend bool operator < (const zrf_Ratio & , const zrf_Ratio & )
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8_作业8.doc