#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:41:15
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
};
void CTime::setTime(int h,int m,int s)
{
hour=h;
minute=m;
second=s;
}
void CTime::display()
{
cout<<hour<<':'<<minute<<':'<<second<<endl;
}
//比较运算符(二目)的重载
bool CTime::operator > (CTime &t)
{
second=second+60*minute+3600*hour;
t.second=t.second+60*t.minute+3600*t.hour;
if(second>t.second)
return true;
else
return false;
}
bool CTime::operator < (CTime &t)
{
CTime t2;
t2.hour=hour;
t2.minute=minute;
t2.second=second;
if(t2>t)
return true;
else
return false;
}
bool CTime::operator >= (CTime &t)
{
second=second+60*minute+3600*hour;
t.second=t.second+60*t.minute+3600*t.hour;
if(second>=t.second)
return true;
else
return false;
}
bool CTime::operator <= (CTime &t)
{
CTime c2;
c2.hour=hour;
c2.minute=minute;
c2.second=second;
if(c2>=t)
return true;
else
return false;
}
bool CTime::operator == (CTime &t)
{
CTime c2;
c2.hour=hour;
c2.minute=minute;
c2.second=second;
if(!(c2>t)&&!(c2<t))
return true;
else
return false;
}
bool CTime::operator != (CTime &t)
{
second=second+60*minute+3600*hour;
t.second=t.second+60*t.minute+3600*t.hour;
if(second==t.second)
return true;
else
return false;
}
//二目运算符的重载
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
{
CTime c1;
unsigned short int m;
m= (hour * 3600 + minute * 60 + second) + (c.hour * 3600 + c.minute * 60 + c.second);
c1.hour=m/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
c1.minute=m/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.second=m%60;
return c1;
}
CTime CTime::operator-(CTime &c)
{
CTime c1;
unsigned short int m;
m=second+60*minute+3600*hour-(c.second+60*c.minute+3600*c.hour);
if(m<0)
{
m=-m;
}
c1.hour=m/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
c1.minute=m/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.second=m%60;
return c1;
}
//返回s秒后的时间
CTime CTime::operator+(int s)
{
CTime c1;
int m;
m=second+60*minute+3600*hour+s;
c1.hour=m/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
c1.minute=m/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.second=m%60;
return c1;
}
//返回s秒前的时间
CTime CTime::operator-(int s)
{
CTime c1;
int m;
m=second+60*minute+3600*hour-s;
if(c1.second<0)
{
m=-m;
}
c1.hour=m/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
c1.minute=m/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.second=m%60;
return c1;
}
//一目运算符的重载
//后置++，下一秒
CTime CTime::operator++(int)
{
CTime temp(*this);
second=second+60*minute+3600*hour;
second++;
second=second%60;
minute=second/60;
if(minute>59)
minute=minute%60;
hour=second/3600;
if(hour>24)
hour=hour%24;
return temp;
}
//前置++，下一秒
CTime CTime:: operator++()
{
second=second+60*minute+3600*hour;
++second;
second=second%60;
minute=second/60;
if(minute>59)
minute=minute%60;
hour=second/3600;
if(hour>24)
hour=hour%24;
return *this;
}
//后置--，前一秒
CTime CTime::operator--(int)
{
CTime temp(*this);
second=second+60*minute+3600*hour;
second--;
second=second%60;
minute=second/60;
hour=second/3600;
return temp;
}
//前置--，前一秒
CTime CTime::operator--()
{
CTime temp(*this);
second=second+60*minute+3600*hour;
--second;
second=second%60;
minute=second/60;
hour=second/3600;
return temp;
}
//赋值运算符的重载
CTime CTime::operator+=(CTime &c)
{
CTime c1;
c1.second=second+60*minute+3600*hour+c.second+60*c.minute+3600*c.hour;
c1.second=c1.second%60;
c1.minute=c1.second/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.hour=c1.second/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
return c1;
}
CTime CTime::operator-=(CTime &c)
{
CTime c1;
c1.second=second+60*minute+3600*hour-(c.second+60*c.minute+3600*c.hour);
if(c1.second<0)
{
cout<<"时间不能为负数"<<endl;
system("pause");
exit(0);
}
c1.second=c1.second%60;
c1.minute=c1.second/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.hour=c1.second/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
return c1;
}
//返回s秒后的时间
CTime CTime::operator+=(int s)
{
CTime c1;
c1.second=second+60*minute+3600*hour+s;
c1.second=c1.second%60;
c1.minute=c1.second/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.hour=c1.second/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
return c1;
}
//返回s秒前的时间
CTime CTime::operator-=(int s)
{
CTime c1;
c1.second=second+60*minute+3600*hour-s;
if(c1.second<0)
{
cout<<"时间不能为负数"<<endl;
system("pause");
exit(0);
}
c1.second=c1.second%60;
c1.minute=c1.second/60;
if(c1.minute>59)
c1.minute=c1.minute%60;
c1.hour=c1.second/3600;
if(c1.hour>24)
c1.hour=c1.hour%24;
return c1;
}
void 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：\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<<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();
cout<<"t2-t1=";
t=t2-t1;
t.display();
int s=5;
t=t1+s;
cout<<"t1"<<' '<<s<<"秒后的时间为:";
t.display();
int n=5;
t=t1-n;
cout<<n<<"秒前的时间为:";
t.display();
t1++;
cout<<"后置++,t1下一秒的时间为:";
t1.display();
++t1;
cout<<"前置++,t1下一秒的时间为:";
t1.display();
t2--;
cout<<"后置--,t2下一秒的时间为:";
t2.display();
--t2;
cout<<"前置--,t2下一秒的时间为:";
t2.display();
t1+=t2;
cout<<"t1+=t2"<<"为:";
t1.display();
t2-=t1;
cout<<"t2-=t1"<<"为:";
t2.display();
int m=10;
t1+=m;
cout<<"t1+=m"<<"为:";
t1.display();
t1-=t2;
cout<<"t1-=t2"<<"为:";
t1.display();
system("pause");
}
