第八周项目四----分数类和整形术的四则运算

/*
* 程序的版权和版本声明部分
* Copyright (c)2013, 烟台大学计算机学院学生
* All rightsreserved.
* 文件名称： object.cpp
* 作者：赵晓晨
* 完成日期： 2013年04月20日
* 版本号： v1.0
* 输入描述：无
* 问题描述：无
* 程序输出：无
*/
#include<iostream>
using namespace std;
class  CFraction
{
private:int nume;int deno;
public:CFraction(int n=1,int d=1):nume(n),deno(d){};CFraction  operator+(CFraction &c);CFraction  operator-(CFraction &c);CFraction  operator*(CFraction &c);CFraction  operator/(CFraction &c);//分数中的类可以和整数进行四则运算CFraction  operator+(int i);CFraction  operator-(int i);CFraction  operator*(int i);CFraction  operator/(int i);CFraction  operator-();bool  operator>(CFraction &c);CFraction  simply(CFraction &c);//friend CFraction  operator+(int i,CFraction &c);friend int divisor(CFraction &c);friend int multiple(CFraction &c);void display();
};
//定义重载运算符+的函数
CFraction CFraction::operator+(CFraction &c)
{CFraction a;a.deno=deno*c.deno;a.nume=nume*c.deno+c.nume*deno;a=simply(a);return a;}
CFraction  CFraction::operator-(CFraction &c)
{CFraction a;a.deno=deno*c.deno;a.nume=nume*c.deno-c.nume*deno;a=simply(a);return a;
}
CFraction  CFraction::operator*(CFraction &c)
{CFraction a;a.deno=deno*c.deno;a.nume=nume*c.nume;a=simply(a);return a;
}
CFraction  CFraction::operator/(CFraction &c)
{CFraction a;a.nume=nume*c.deno;a.deno=deno*c.nume;a=simply(a);return a;
}
CFraction  CFraction::operator-()
{CFraction a;a.deno=nume;a.nume=deno;a=simply(a);return a;
}
bool CFraction::operator>(CFraction &c)
{if(nume/deno>c.nume/c.deno)return true;elsereturn false;
}
CFraction  CFraction::simply(CFraction &c)
{CFraction a;int b=divisor(c);a.nume=c.nume/b;a.deno=c.deno/b;return a;
}
int divisor(CFraction &c)
{int n=min(c.deno,c.nume);for(int i=n;i>=0;i--){if(c.deno%i==0 && c.nume%i==0){return i;break;}}
}CFraction  CFraction::operator+(int i)
{CFraction a;a.deno=deno;a.nume=nume+i*deno;a=simply(a);return a;
}
CFraction  CFraction::operator-(int i)
{CFraction a;a.deno=deno;a.nume=nume-i*deno;if(a.nume<0){a.nume=-a.nume;a=simply(a);a.nume=-a.nume;return a;}else{a=simply(a);return a;}
}
CFraction  CFraction::operator*(int i)
{CFraction a;a.deno=deno;a.nume=nume*i;a=simply(a);return a;
}
CFraction  CFraction::operator/(int i)
{CFraction a;a.deno=deno*i;a.nume=nume;a=simply(a);return a;}
CFraction  operator+(int i,CFraction &c)
{CFraction a;a.deno=c.deno;a.nume=c.nume+i*c.deno;a=a.simply(a);return a;}
void CFraction::display()
{
cout<<nume<<"/"<<deno<<endl;
}
//main函数进行测试
int main()
{CFraction t1(1,2),t2(3,4),t3,t4,t5;int i=1;cout<<"t1+t2=";t3=t1+t2;t3.display();cout<<"t2-t1=";t3=t2-t1;t3.display();cout<<"t1*t2=";t3=t1*t2;t3.display();cout<<"t1/t2=";t3=t1/t2;t3.display();cout<<"去倒数";t3=-t1;t3.display();if(t1>t2){cout<<"t1>t2"<<endl;}else{cout<<"t1<t2"<<endl;}cout<<"t1+"<<i<<"=";t4=t1+1;t4.display();cout<<i<<"+t1=";t4=1+t1;t4.display();cout<<"t1-"<<i<<"=";t4=t1-1;t4.display();cout<<"t1*"<<i<<"=";t4=t1*1;t4.display();cout<<"t1/"<<i<<"=";t4=t1/1;t4.display();return 0;
}

结果：

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<pre name="code" class="cpp">/* *Copyright(c)2016,烟台大学计算机与控制工程学院 *All righ ...

第八周项目四----分数类和整形术的四则运算

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