第九周实验报告3
2012-04-16 19:14
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/* (程序头部注释开始)
* 程序的版权和版本声明部分
* Copyright (c) 2011, 烟台大学计算机学院学生
* All rights reserved.
* 文件名称: 分数类中的运算符重载
* 作 者: 于宸
* 完成日期: 2012 年 04 月 16 日
* 版 本 号: V.1.0
* 对任务及求解方法的描述部分
* 问题描述:实现分数类中的运算符重载,在分数类中可以完成分数的
* 加减乘除(运算后再化简)、求反、比较(6种关系)的运算。
* 程序头部的注释结束
#include<iostream>
using namespace std;
class CFraction
{
private:
int nume; // 分子
int deno; // 分母
public:
CFraction(int nu = 1,int de = 2); //构造函数,初始化用
friend istream& operator >> (istream&,CFraction&);//声明重载运算符“>>”函数
friend ostream& operator << (ostream&,CFraction&);//声明重载运算符“<<”函数
void Simplify(); //化简(使分子分母没有公因子)
void S_Simplify(); //化简(以4/3为例,输出1(1/3),表示一又三分之一)
void output(int style); //输出:以8/6为例,style为0时,输出8/6;
//style为1时,输出4/3;
//style为2时,输出1(1/3),表示一又三分之一;
//不给出参数和非1、2,认为是方式0
CFraction operator+(CFraction &CF2); //定义分数加法
CFraction operator-(CFraction &CF2); //定义分数减法
CFraction operator*(CFraction &CF2); //定义分数乘法
CFraction operator/(CFraction &CF2); //定义分数除法
CFraction operator-();//取反
//比较大小
bool operator > (CFraction &CF2);
bool operator < (CFraction &CF2);
bool operator >= (CFraction &CF2);
bool operator <= (CFraction &CF2);
bool operator == (CFraction &CF2);
bool operator != (CFraction &CF2);
};
//构造函数,初始化用
CFraction::CFraction(int nu,int de)
{
nume = nu;
deno = de;
}
//输出分数
ostream& operator << (ostream& output,CFraction& CF)
{
cout << CF.nume << "/" << CF.deno;
return output;
}
//按照"nu/de"的格式,如"5/2"的形式输入
istream& operator >> (istream& input,CFraction& CF)
{
char b;
cout << "请输入分数(按照“a/b”形式输入):" << endl;
input >> CF.nume >> b >> CF.deno;
return input;
}
//化简(使分子分母没有公因子)
void CFraction::Simplify()
{
for(int i = 2;i <= nume && i <= deno;i++)
{
if(nume % i == 0 && deno % i == 0)
{
nume = nume/i;
deno = deno/i;
i--;
}
}
cout << (*this) << endl;
}
//化简(以4/3为例,输出1(1/3),表示一又三分之一)
void CFraction::S_Simplify()
{
for(int i = 2;i <= nume && i <= deno;i++)
{
if(nume % i == 0 && deno % i == 0)
{
nume = nume/i;
deno = deno/i;
i--;
}
}
if(nume >= deno)
{
int n;
n = nume / deno;
nume = nume % deno;
cout << n << "(" << (*this) << ")" << endl;
}
else
{
cout << (*this);
}
}
//输出:以8/6为例,style为0时,输出8/6;
//style为1时,输出4/3;
//style为2时,输出1(1/3),表示一又三分之一;
//不给出参数和非1、2,认为是方式0
void CFraction::output(int style)
{
if(style == 1)
{
CFraction::Simplify();
}
else if(style == 2)
{
CFraction::S_Simplify();
}
else
{
cout << (*this) << endl;
}
}
//定义分数加法
CFraction CFraction::operator+(CFraction &CF2)
{
nume = nume * CF2.deno + CF2.nume * deno;
deno = deno * CF2.deno;
return (*this);
}
//定义分数减法
CFraction CFraction::operator-(CFraction &CF2)
{
nume = nume * CF2.deno - CF2.nume * deno;
deno = deno * CF2.deno;
return (*this);
}
//定义分数乘法
CFraction CFraction::operator*(CFraction &CF2)
{
nume = nume * CF2.nume;
deno = deno * CF2.deno;
return (*this);
}
//定义分数除法
CFraction CFraction::operator/(CFraction &CF2)
{
nume = nume * CF2.deno;
deno = deno * CF2.nume;
return (*this);
}
//取反
CFraction CFraction::operator-()
{
nume = - nume;
deno = deno;
return (*this);
}
//比较大小
bool CFraction::operator > (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume > CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator < (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume < CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator >= (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume >= CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator <= (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume <= CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator == (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume == CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator != (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume != CF2.nume )
{
return true;
}
else
{
return false;
}
}
void main()
{
CFraction CF1, CF2;
cin >> CF1;
CF1.output(1);
cin >> CF2;
CF2.output(2);
cout << endl;
CFraction CF3(3,4), CF4(1,4),CF5;
cout << "CF3为:" ;
cout << CF3 << endl;
cout << "CF4为:" ;
cout << CF4 << endl;
CF5 = CF3;
CF5 = CF5 + CF4;
cout << "CF3 + CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = CF5 - CF4;
cout << "CF3 - CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = CF5 * CF4;
cout << "CF3 * CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = CF5 / CF4;
cout << "CF3 / CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = - CF5;
cout << "-CF3 = ";
cout << CF5 << endl;
cout << "比较两个分数大小:" << endl;
if (CF3 > CF4) cout << "CF3 > CF4" << endl;
if (CF3 < CF4) cout << "CF3 < CF4" << endl;
if (CF3 >= CF4) cout << "CF3 >= CF4" << endl;
if (CF3 <= CF4) cout << "CF3 <= CF4" << endl;
if (CF3 == CF4) cout << "CF3 == CF4" << endl;
if (CF3 != CF4) cout << "CF3 != CF4" << endl;
system("pause");
}
* 程序的版权和版本声明部分
* Copyright (c) 2011, 烟台大学计算机学院学生
* All rights reserved.
* 文件名称: 分数类中的运算符重载
* 作 者: 于宸
* 完成日期: 2012 年 04 月 16 日
* 版 本 号: V.1.0
* 对任务及求解方法的描述部分
* 问题描述:实现分数类中的运算符重载,在分数类中可以完成分数的
* 加减乘除(运算后再化简)、求反、比较(6种关系)的运算。
* 程序头部的注释结束
#include<iostream>
using namespace std;
class CFraction
{
private:
int nume; // 分子
int deno; // 分母
public:
CFraction(int nu = 1,int de = 2); //构造函数,初始化用
friend istream& operator >> (istream&,CFraction&);//声明重载运算符“>>”函数
friend ostream& operator << (ostream&,CFraction&);//声明重载运算符“<<”函数
void Simplify(); //化简(使分子分母没有公因子)
void S_Simplify(); //化简(以4/3为例,输出1(1/3),表示一又三分之一)
void output(int style); //输出:以8/6为例,style为0时,输出8/6;
//style为1时,输出4/3;
//style为2时,输出1(1/3),表示一又三分之一;
//不给出参数和非1、2,认为是方式0
CFraction operator+(CFraction &CF2); //定义分数加法
CFraction operator-(CFraction &CF2); //定义分数减法
CFraction operator*(CFraction &CF2); //定义分数乘法
CFraction operator/(CFraction &CF2); //定义分数除法
CFraction operator-();//取反
//比较大小
bool operator > (CFraction &CF2);
bool operator < (CFraction &CF2);
bool operator >= (CFraction &CF2);
bool operator <= (CFraction &CF2);
bool operator == (CFraction &CF2);
bool operator != (CFraction &CF2);
};
//构造函数,初始化用
CFraction::CFraction(int nu,int de)
{
nume = nu;
deno = de;
}
//输出分数
ostream& operator << (ostream& output,CFraction& CF)
{
cout << CF.nume << "/" << CF.deno;
return output;
}
//按照"nu/de"的格式,如"5/2"的形式输入
istream& operator >> (istream& input,CFraction& CF)
{
char b;
cout << "请输入分数(按照“a/b”形式输入):" << endl;
input >> CF.nume >> b >> CF.deno;
return input;
}
//化简(使分子分母没有公因子)
void CFraction::Simplify()
{
for(int i = 2;i <= nume && i <= deno;i++)
{
if(nume % i == 0 && deno % i == 0)
{
nume = nume/i;
deno = deno/i;
i--;
}
}
cout << (*this) << endl;
}
//化简(以4/3为例,输出1(1/3),表示一又三分之一)
void CFraction::S_Simplify()
{
for(int i = 2;i <= nume && i <= deno;i++)
{
if(nume % i == 0 && deno % i == 0)
{
nume = nume/i;
deno = deno/i;
i--;
}
}
if(nume >= deno)
{
int n;
n = nume / deno;
nume = nume % deno;
cout << n << "(" << (*this) << ")" << endl;
}
else
{
cout << (*this);
}
}
//输出:以8/6为例,style为0时,输出8/6;
//style为1时,输出4/3;
//style为2时,输出1(1/3),表示一又三分之一;
//不给出参数和非1、2,认为是方式0
void CFraction::output(int style)
{
if(style == 1)
{
CFraction::Simplify();
}
else if(style == 2)
{
CFraction::S_Simplify();
}
else
{
cout << (*this) << endl;
}
}
//定义分数加法
CFraction CFraction::operator+(CFraction &CF2)
{
nume = nume * CF2.deno + CF2.nume * deno;
deno = deno * CF2.deno;
return (*this);
}
//定义分数减法
CFraction CFraction::operator-(CFraction &CF2)
{
nume = nume * CF2.deno - CF2.nume * deno;
deno = deno * CF2.deno;
return (*this);
}
//定义分数乘法
CFraction CFraction::operator*(CFraction &CF2)
{
nume = nume * CF2.nume;
deno = deno * CF2.deno;
return (*this);
}
//定义分数除法
CFraction CFraction::operator/(CFraction &CF2)
{
nume = nume * CF2.deno;
deno = deno * CF2.nume;
return (*this);
}
//取反
CFraction CFraction::operator-()
{
nume = - nume;
deno = deno;
return (*this);
}
//比较大小
bool CFraction::operator > (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume > CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator < (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume < CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator >= (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume >= CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator <= (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume <= CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator == (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume == CF2.nume )
{
return true;
}
else
{
return false;
}
}
bool CFraction::operator != (CFraction &CF2)
{
nume = nume * CF2.deno;
CF2.nume = CF2.nume * deno;
if( nume != CF2.nume )
{
return true;
}
else
{
return false;
}
}
void main()
{
CFraction CF1, CF2;
cin >> CF1;
CF1.output(1);
cin >> CF2;
CF2.output(2);
cout << endl;
CFraction CF3(3,4), CF4(1,4),CF5;
cout << "CF3为:" ;
cout << CF3 << endl;
cout << "CF4为:" ;
cout << CF4 << endl;
CF5 = CF3;
CF5 = CF5 + CF4;
cout << "CF3 + CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = CF5 - CF4;
cout << "CF3 - CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = CF5 * CF4;
cout << "CF3 * CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = CF5 / CF4;
cout << "CF3 / CF4 = ";
cout << CF5 << endl;
cout << "化简后得:";
CF5.Simplify();
CF5 = CF3;
CF5 = - CF5;
cout << "-CF3 = ";
cout << CF5 << endl;
cout << "比较两个分数大小:" << endl;
if (CF3 > CF4) cout << "CF3 > CF4" << endl;
if (CF3 < CF4) cout << "CF3 < CF4" << endl;
if (CF3 >= CF4) cout << "CF3 >= CF4" << endl;
if (CF3 <= CF4) cout << "CF3 <= CF4" << endl;
if (CF3 == CF4) cout << "CF3 == CF4" << endl;
if (CF3 != CF4) cout << "CF3 != CF4" << endl;
system("pause");
}
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