第八周项目二——Time类中的运算符重载

/** 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：杨晨* 完成日期： 2013年4 月 19 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 CTime{private:unsigned short int hour;    // 时unsigned short int minute;  // 分unsigned short int second;  // 秒public:CTime(int h=0,int m=0,int s=0):hour(h),minute(m),second(s){}void setTime(int h,int m,int s);void display();//比较运算符(二目)的重载bool operator > (CTime &t);bool operator < (CTime &t);bool operator >= (CTime &t);bool operator <= (CTime &t);bool operator == (CTime &t);bool operator != (CTime &t);//二目运算符的重载CTime operator+(CTime &c);//返回c所规定的时、分、秒后的时间，例t1(8,20,25),t2(11,20,50)，t1+t2为:41:15CTime operator-(CTime &c);//对照+理解CTime operator+(int s);//返回s秒后的时间CTime operator-(int s);//返回s秒前的时间//一目运算符的重载CTime operator++( int);//后置++，下一秒CTime operator++();//前置++，下一秒，前置与后置返回值不一样CTime operator--( int);//后置--，前一秒CTime operator--();//前置--，前一秒//赋值运算符的重载     CTime operator+=(CTime &c);CTime operator-=(CTime &c);CTime operator+=(int s); CTime operator-=(int s); };//下面实现所有的运算符重载代码。void CTime::setTime(int h,int m,int s) {      hour=h;      minute=m;      second=s;  }  void CTime::display()  {      cout << hour << ":" << minute << ":" << second <<endl;  }  bool CTime::operator>(CTime &t){    return (hour*3600+minute*60+second > t.hour*3600+t.minute*60+t.second);}bool CTime::operator<(CTime &t){    if(hour*3600+minute*60+second<t.hour*3600+t.minute*60+t.second)    {        return true;    }    else    {        return false;    }}bool CTime::operator>=(CTime &t){    if(hour*3600+minute*60+second>=t.hour*3600+t.minute*60+t.second)    {        return true;    }    else    {        return false;    }}bool CTime::operator<=(CTime &t){    if(hour*3600+minute*60+second<=t.hour*3600+t.minute*60+t.second)    {        return true;    }    else    {        return false;    }}bool CTime::operator==(CTime &t){    if(hour==t.hour&&minute==t.minute&&second==t.second)    {        return true;    }    else    {        return false;    }}bool CTime::operator!=(CTime &t){    if(hour!=t.hour||minute!=t.minute||second!=t.second)    {        return true;    }    else    {        return false;    }}CTime CTime::operator+(CTime &c){int T;CTime c2;T=hour*3600+minute*60+second+c.hour*3600+c.minute*60+c.second;c2.hour=T/3600;if(c2.hour>=24)      {         c2.hour-=24;      }  T=T%3600;c2.minute=T/60;T=T%60;c2.second=T;return c2;}CTime CTime::operator-(CTime &c){int T;CTime c2;T=hour*3600+minute*60+second-(c.hour*3600+c.minute*60+c.second);if(T<0)      {          T = -T;      }  c2.hour=T/3600;if(c2.hour>=24)      {         c2.hour-=24;      }  T=T%3600;c2.minute=T/60;T=T%60;c2.second=T;return c2;}CTime CTime::operator+(int s)//返回s秒后的时间{int T;CTime c;T=hour*3600+minute*60+second+s;c.hour=T/3600;T=T%3600;c.minute=T/60;T=T%60;c.second=T;return c;}CTime CTime::operator-(int s){int T;CTime c;T=hour*3600+minute*60+second-s;c.hour=T/3600;T=T%3600;c.minute=T/60;T=T%60;c.second=T;return c;}CTime CTime::operator++(int){CTime temp(*this);int T;T=hour*3600+minute*60+second+1;hour=T/3600;T=T%3600;minute=T/60;T=T%60;second=T;return temp;}CTime CTime::operator++(){int T;T=hour*3600+minute*60+second+1;hour=T/3600;T=T%3600;minute=T/60;T=T%60;second=T;return *this;}CTime CTime::operator--(int){CTime temp(*this);int T;T=hour*3600+minute*60+second-1;hour=T/3600;T=T%3600;minute=T/60;T=T%60;second=T;return temp;}CTime CTime::operator--(){int T;T=hour*3600+minute*60+second-1;hour=T/3600;T=T%3600;minute=T/60;T=T%60;second=T;return *this;}CTime CTime::operator+=(CTime &c){CTime c1;c1=(*this)+c;return c1;}CTime CTime::operator-=(CTime &c){CTime c1;c1=(*this)-c;return c1;}CTime CTime::operator+=(int s){CTime c1;c1=(*this)+s;return c1;}CTime CTime::operator-=(int s) {CTime c1;c1=(*this)-s;return c1;}//为简化编程，请注意通过调用已有函数，利用好各函数之间的关系int main(){CTime t1(8,20,25),t2(11,20,50),t;cout<<"t1为：";t1.display();cout<<"t2为：";t2.display();cout<<"下面比较两个时间大小："<<endl;if (t1>t2) cout<<"t1>t2"<<endl;if (t1<t2) cout<<"t1<t2"<<endl;if (t1==t2) cout<<"t1＝t2"<<endl; if (t1!=t2) cout<<"t1≠t2"<<endl;if (t1>=t2) cout<<"t1≥t2"<<endl;if (t1<=t2) cout<<"t1≤t2"<<endl;cout<<endl;//下面自行设计对其他运算符的重载的测试t=t1+t2;  cout<<"t1+t2=";  t.display();t=t1-t2;  cout<<"t1-t2=";  t.display();t=t1+t2;  cout<<"t1+t2=";  t.display();t=t1-t2;  cout<<"t1-t2=";  t.display();t=t1+35;cout<<"t1+35=";    t.display();t=t2-55;cout<<"t2-55=";t.display();t=t1++;cout<<endl;cout<<"t1++ = ";t.display();t=++t1;cout<<"++t1 = ";t.display();t=t2--;cout<<"t2-- = ";t.display();t=--t1;cout<<"--t1 = ";t.display();t1+=t2;cout<<"t1+=t2,t= " ;t.display();t2-=t1;cout<<"t2-=t1,t= " ;t.display();t1+=5;cout<<"t1+=5= " ;t.display();t1-=6;cout<<"t1-=6= " ;t.display();system("pause"); return 0;}

输出结果：

心得体会：

药学会单步执行。。。