第9周实验报告3

实验目的：实现分数类中的运算符重载
* 程序头部注释开始
* 程序的版权和版本声明部分
* 烟台大学计算机学院学生
* 文件名称：         运算符重载
* 作    者：          胡斌                
* 完成日期：  2012 年 4月17日
* 版本号：     v1.0    

* 程序头部的注释结束（此处也删除了斜杠）

#include<iostream>    using namespace std; class CFraction  {  private:      int nume; // 分子       int deno; // 分母   public:          void Simplify(); //化简（使分子分母没有公因子） CFraction operator + (CFraction  &c);CFraction operator - (CFraction  &c);CFraction operator * (CFraction  &c);CFraction operator / (CFraction  &c);CFraction operator + ();CFraction operator - ();bool operator > (CFraction &c);bool operator < (CFraction &c);bool operator >= (CFraction &c);bool operator <= (CFraction &c);bool operator == (CFraction &c);bool operator != (CFraction &c);friend ostream& operator << (ostream&, CFraction&);    friend istream& operator >> (istream&, CFraction&);};ostream& operator << (ostream& output, CFraction& cf){cout << cf.nume << "/" << cf.deno << endl;return output;}istream& operator >> (istream& input, CFraction& cf){cout << "请输入要置分数的分子和分母:";input >> cf.nume >> cf.deno;return input;}  void main()  {      CFraction cf1, cf2, cf3;      cin >> cf1 >> cf2;cout << "cf1 = " << cf1;    cout << "cf2 = " << cf2;cf3 = cf1 + cf2;cout << "cf1 + cf2 = " ;    cf3.Simplify();cf3 = cf1 - cf2;cout << "cf1 - cf2 = " ;cf3.Simplify();cf3 = cf1 * cf2;cout << "cf1 * cf2 = ";cf3.Simplify();cf3 = cf1 / cf2;cout << "cf1 / cf2 = ";cf3.Simplify();cout << "对cf1取正得: ";cf1 = + cf1;cout << "对cf2取反得: ";cf2 = - cf2;if(cf1 > cf2) cout << "cf1 > cf2" << endl;if(cf1 < cf2) cout << "cf1 < cf2" << endl;if(cf1 == cf2) cout << "cf1 ＝ cf2" << endl; if(cf1 != cf2) cout << "cf1 ≠ cf2" << endl;if(cf1 >= cf2) cout << "cf1 ≥ cf2" << endl;if(cf1 <= cf2) cout << "cf1 ≤ cf2" << endl;        system("pause");}     void CFraction::Simplify()  {      int a[10], j = 0;      for(int i = 1; i <= nume; i++)      {          if(nume % i == 0)          {              a[j] = i;              j++;          }      }      //定义a[10]数组用于存储nume的因数       int b[10], m = 0;      for(int n = 1; n <= deno; n++)      {          if(deno % n == 0)          {              b[m] = n;              m++;          }      }      //定义b[10]数组用于存储deno的因数       for(int k = 0; k <= (j - 1); k++)      {          for(int p = 0; p <= (m - 1); p++)          {              if(a[k] == b[p])              {                  nume = nume / a[k];                  deno = deno / a[k];              }          }      }          cout << nume << "/" << deno << endl;  } CFraction CFraction::operator + (CFraction  &c){CFraction C;C.deno = deno * c.deno;C.nume = nume * c.deno + c.nume * deno;return C;}CFraction CFraction::operator - (CFraction  &c){CFraction C;C.deno = deno * c.deno;if(nume * c.deno < c.nume * deno){        C.nume = -(c.nume * deno - nume * c.deno);}else    C.nume = nume * c.deno - c.nume * deno;return C;}CFraction CFraction::operator * (CFraction  &c){CFraction C;C.deno = deno * c.deno;C.nume = nume * c.nume;return C;}CFraction CFraction::operator / (CFraction  &c){CFraction C;C.deno = deno * c.nume ;C.nume = nume * c.deno;return C;}CFraction CFraction::operator - (){CFraction C;C.deno = deno;C.nume = nume;cout << "-(" << C.nume << "/" << C.deno << ")" << endl;return C;}CFraction CFraction::operator + (){CFraction C;C.deno = deno;C.nume = nume;cout << "+(" << C.nume << "/" << C.deno << ")" << endl;return C;}bool CFraction::operator > (CFraction &c){deno = deno * c.deno;c.deno = deno;if((nume * c.deno) > (c.nume * deno))return true;elsereturn false;}bool CFraction::operator < (CFraction &c){deno = deno * c.deno;c.deno = deno;if((nume * c.deno) < (c.nume * deno))return true;elsereturn false;}bool CFraction::operator == (CFraction &c){deno = deno * c.deno;c.deno = deno;if((nume * c.deno) == (c.nume * deno))return true;elsereturn false;}bool CFraction::operator != (CFraction &c){deno = deno * c.deno;c.deno = deno;if((nume * c.deno) == (c.nume * deno))return false;elsereturn true;}bool CFraction::operator >= (CFraction &c){if((nume * c.deno) >= (c.nume * deno))return true;elsereturn false;}bool CFraction::operator <= (CFraction &c){if((nume * c.deno) <= (c.nume * deno))return true;elsereturn false;}

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