第十三周项目1-分数类中的运算符重载——2

来源：互联网发布：手提包女士知乎编辑：程序博客网时间：2024/06/05 10:43
/**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){}    //类与类的加、减、乘、除运算    CFraction operator+(CFraction &c1);    CFraction operator-(CFraction &c1);    CFraction operator*(CFraction &c1);    CFraction operator/(CFraction &c1);    //类与数的加、减、乘、除运算    CFraction operator+(int a);    CFraction operator-(int a);    CFraction operator*(int a);    CFraction operator/(int a);    friend CFraction operator+(int a,CFraction &c1);    friend CFraction operator-(int a,CFraction &c1);    friend CFraction operator*(int a,CFraction &c1);    friend CFraction operator/(int a,CFraction &c1);    friend int operator>(CFraction &c1,CFraction &c2);    void qualify();    void show()const;}; //类与类的加、减、乘、除运算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);}//类与数的加、减、乘、除运算CFraction CFraction::operator+(int a){    return CFraction(a*deno+nume,deno);}CFraction CFraction::operator-(int a){    return CFraction(nume-a*deno,deno);}CFraction CFraction::operator*(int a){    return CFraction(nume*a,deno);}CFraction CFraction::operator/(int a){    return CFraction(nume,deno*a);}//类与数的加、减、乘、除运算,运算符合交换律CFraction operator+(int a,CFraction &c1){    return CFraction(a*c1.deno+c1.nume,c1.deno);}CFraction operator-(int a,CFraction &c1){    return CFraction(a*c1.deno-c1.nume,c1.deno);}CFraction operator*(int a,CFraction &c1){    return CFraction(c1.nume*a,c1.deno);}CFraction operator/(int a,CFraction &c1){    return CFraction(c1.deno*a,c1.nume);}int operator>(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{    if(deno==1)        cout<<nume<<endl;    else    cout<<nume<<'/'<<deno<<endl;}int main(){    CFraction c1(1,2),c2(3,4),c3,a(1,3);    int i=2;    c3=c1+c2;    c3.qualify();    cout<<"(1/2)+(3/4)=";    c3.show();    c3=c1-c2;    c3.qualify();    cout<<"(1/2)-(3/4)=";    c3.show();    c3=c1*c2;    c3.qualify();    cout<<"(1/2)*(3/4)=";    c3.show();    c3=c1/c2;    c3.qualify();    cout<<"(1/2)/(3/4)=";    c3.show();    c3=a+i;    c3.qualify();    cout<<"(1/3)+2=";    c3.show();    c3=i+a;    c3.qualify();    cout<<"2+(1/3)=";    c3.show();    c3=45+a;    c3.qualify();    cout<<"45+(1/3)=";    c3.show();    c3=a*27;    c3.qualify();    cout<<"(1/3)*27=";    c3.show();    c3=5/a;    c3.qualify();    cout<<"5/(1/3)=";    c3.show();    if(c1>c2)cout<<"(1/2)>(3/4)"<<endl;    else cout<<"(1/2)<(3/4)"<<endl;    return 0;}
运行结果
0 0