第十三周项目1-分数类中的运算符重载——1

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/**Copyright (c) 2016,烟台大学计算机学院*All rights reserved.*文件名称 :*作 者 : 徐聪*完成日期 : 2016年5月26号*版 本 号 : v6.0**问题描述 :*/#include<iostream>using namespace std;class CFraction{private:    int nume; //分子    int deno; //分母public:    CFraction(int n=1,int d=1):nume(n),deno(d){}    CFraction operator+(CFraction &c1);    CFraction operator-(CFraction &c1);    CFraction operator*(CFraction &c1);    CFraction operator/(CFraction &c1);    friend int compare(CFraction &c1,CFraction &c2);    void qualify();    void show()const;};CFraction CFraction::operator+(CFraction &c1){    return CFraction(c1.deno*nume+c1.nume*deno,deno*c1.deno);}CFraction CFraction::operator-(CFraction &c1){    return CFraction(c1.deno*nume-c1.nume*deno,deno*c1.deno);}CFraction CFraction::operator*(CFraction &c1){    return CFraction(nume*c1.nume,deno*c1.deno);}CFraction CFraction::operator/(CFraction &c1){    return CFraction(nume*c1.deno,deno*c1.nume);}int compare(CFraction &c1,CFraction &c2){    if(c1.deno!=c2.deno)    {        if(c1.deno>c2.deno)            return 0;        else            return 1;    }    if(c1.deno==c2.deno)    {        if(c1.nume>c2.nume)            return 1;        else            return 0;    }}void CFraction::qualify(){    int k=1,n=nume,d=deno;    while(deno!=0)    {        k=nume%deno;        nume=deno;        deno=k;    }    n=n/nume;    d=d/nume;    nume=n;    deno=d;}void CFraction::show()const{    cout<<nume<<'/'<<deno<<endl;}int main(){    CFraction c1(1,2),c2(3,4),c3;    c3=c1+c2;    c3.qualify();    c3.show();    c3=c1-c2;    c3.qualify();    c3.show();    c3=c1*c2;    c3.qualify();    c3.show();    c3=c1/c2;    c3.qualify();    c3.show();    return 0;}
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