第9周任务2

时间：2021-10-24 08:08:10
#include <iostream>   
using namespace std;
#include "time2.h"

class CTime  
{  
private:  
 unsigned short int hour;    // 时   
 unsigned short int minute;  // 分   
 unsigned short int sec;  // 秒   
public:  
 CTime(int h=0,int m=0,int s=0);  
 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:41:15   
 CTime 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   
 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);//返回s秒后的时间   
 CTime operator-=(int s);//返回s秒前的时间 
friend ostream& operator << (ostream&,CTime&);
friend istream& operator >> (istream&,CTime&);

};  
CTime::CTime(int h,int m,int s)  
{  
 hour=h;  
 minute=m;  
 sec=s;  
}  
void CTime::setTime(int h,int m,int s)  
{  
 hour=h;  
 minute=m;  
 sec=s;  
}  

void CTime::display()  
{  
 cout<<hour<<':'<<minute<<':'<<sec;  
}  
 //比较运算符(二目)的重载   
bool CTime:: operator > (CTime &t)  
{  
 if(hour>t.hour) return true;  
 if(hour<t.hour) return false;  
 if(minute>t.minute) return true;  
 if(minute<t.minute) return false;  
 if(sec>t.sec) return true;  
 if(sec<t.sec) return false;  
 else return false;  
}  

bool CTime::operator < (CTime &t)  
{     
 if(hour<t.hour) return true;  
 if(hour>t.hour) return false;  
 if(minute<t.minute) return true;  
 if(minute>t.minute) return false;  
 if(sec<t.sec) return true;  
 if(sec>t.sec) return false;  
 else return false;  
}  

bool CTime::operator >= (CTime &t)  
{  
 if(hour<t.hour) return false;  
 if(hour>t.hour) return true;  
 if(minute>t.minute) return true;  
 if(minute<t.minute) return false;  
 if(sec>t.sec) return true;  
 if(sec< t.sec) return false;  
 else return true;  
}  
bool CTime::operator <= (CTime &t)  
{     
 if(hour>t.hour) return false;  
 if(hour<t.hour) return true;  
 if(minute<t.minute) return true;  
 if(minute>t.minute) return false;  
 if(sec<t.sec) return true;  
 if(sec> t.sec) return false;  
 else return true;  
}  
bool CTime:: operator == (CTime &t)  
{  
 if(hour>t.hour) return false;  
 if(hour<t.hour) return false;  
 if(minute>t.minute) return false;  
 if(minute<t.minute) return false;  
 if(sec>t.sec)return false;  
 if(sec<t.sec)return false;  
 else return true;  
}  

bool CTime::operator != (CTime &t)  
{     
 if(hour>t.hour) return true;  
 if(hour<t.hour) return true;  
 if(minute>t.minute) return true;  
 if(minute<t.minute) return true;  
 if(sec>t.sec)return true;  
 if(sec<t.sec)return true;  
 else return false;  
}  

 //二目运算符的重   
CTime 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:41:15   
{  
 int t;  
 CTime T;  
 t=sec+c.sec+minute*60+c.minute*60+hour*3600+c.hour*3600;  
 T.hour=t/3600;  
 T.minute=(t-T.hour*3600)/60;  
 T.sec=t-T.hour*3600-T.minute*60;  
 T.hour=T.hour%24;  
 return T;  
}  
CTime CTime::operator-(CTime &c)//对照+理解   
{  
 int t;  
 CTime T;  
 t=sec-c.sec+minute*60-c.minute*60+hour*3600-c.hour*3600;  
    T.hour=t/3600;  
 T.minute=(t-T.hour*3600)/60;  
 T.sec=t-T.hour*3600-T.minute*60;  
 T.hour=T.hour%24;  
 return T;  
}  

CTime CTime:: operator+(int s)//返回s秒后的时间   
{     
 int t;  
    CTime T;  
 t=sec+minute*60+hour*3600+s;  
    T.hour=t/3600;  
 T.minute=(t-T.hour*3600)/60;  
 T.sec=t-T.hour*3600-T.minute*60;  
 T.hour=T.hour%24;  
 return T;  
}  

CTime CTime:: operator-(int s)//返回s秒前的时间   
{   int t;  
    CTime T;  
 t=sec+minute*60+hour*3600-s;  
    T.hour=t/3600;  
 T.minute=(t-T.hour*3600)/60;  
 T.sec=t-T.hour*3600-T.minute*60;  
 T.hour=T.hour%24;  
 return T;  
}  

 //一目运算符的重载   
CTime CTime::operator++(int)//后置++，下一秒   
{  
 CTime t=*this;  
 *this=*this+1;  
 return t;  
}  

CTime CTime::operator++()//前置++，下一秒   
{  
 *this=*this+1;  
 return *this;  
}  
CTime CTime::operator--(int)//后置--，前一秒   
{  
 CTime t=*this;  
 *this=*this-1;  
 return t;  
}  

CTime CTime::operator--()//前置--，前一秒   
{  
 *this=*this-1;  
 return *this;  
}  

 //赋值运算符的重载       
CTime CTime::operator+=(CTime &c)//(Time t1(3,5,25),t2(12,12,23),t1+=t2----->t1=t1+t2;   
{  
 *this=*this+c;  
 return *this;  
}  
CTime CTime::operator-=(CTime &c)  
{     
 *this=*this+c;  
 return *this;  
}  

CTime CTime::operator+=(int s)//返回s秒后的时间   
{     
 *this=*this+s;  
 return *this;  
}  

CTime CTime::operator-=(int s)//返回s秒前的时间   
{  
   *this=*this+s;  
 return *this;  
}  
ostream& operator << (ostream& output,CTime& t)
{
 output<<t.hour<<':'<<t.minute<<':'<<t.sec;
 return output;
}

istream& operator >> (istream& input,CTime& t)
{
 cout<<"请输入时间：";
 input>>t.hour>>t.minute>>t.sec;
 return input;
}

void main()  
{  
 //CTime t1(8,20,25),t2(11,20,50),t,t4(15,35,43); 
CTime t1,t2,t,t4;
cin>>t1>>t2;
cout<<endl;
 cout<<"t1为："; 
 cout<<t1<<endl;
 t1.display();  
 cout<<endl;  
 cout<<"t2为：";  
 cout<<t2<<endl;
 t2.display();  
 cout<<endl;  
 cout<<"下面比较两个时间大小：\n";  
 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<<"时间之和：";  
 cout<<(t1+t2);
 cout<<endl;  
 cout<<"时间只差：";  
 cout<<(t2-t1);
 cout<<endl;  
 cout<<"t1时间100s后的时间：";  
 cout<<endl;  
 (t1+=(100)).display();  
 cout<<endl<<"t2+=t4:";  
 (t2+=t4).display();  
}


 

第9周任务2
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