Time类中的运算符重载 - c++编程基础

CTime c;
c.second=second-c2.second;
c.minute=minute-c2.minute;
if(c.second>59)
c.second+=60;
c.minute--;

c.hour=hour-c2.hour;
if(c.minute>59)
c.minute+=60;
c.hour--;

if(c.hour>23)
c.hour+=24;
return c;
}
CTime CTime::operator+(int s)
{
CTime c;
c.second=second+s;
c.minute=minute;
c.hour=hour;
if(c.second>59)
c.minute=c.minute+c.second/60;
c.second%=60;
if(c.minute>69)
c.hour=c.hour+c.minute/60;
if(c.hour>23)
c.hour%=24;
return c;
}
CTime CTime::operator-(int s)
{
CTime c;
c.second=second-s%60;
c.minute=minute-s/60%60;
c.hour=hour-s/3600%24;
if(c.second>59)
c.second+=60;
c.minute--;
if(c.minute>59)
c.minute+=60;
c.hour--;
if(c.hour>23)
c.hour+=24;
return c;
}
CTime CTime::operator++( int)
{
CTime temp(*this);
second++;
{
if(second>=60)
{
second-=60;
++minute;
}
else if(minute>=60)
{
minute-=60;
++hour;
}
else if (hour>=24)
hour-=24;
}
return *this ;
}

CTime CTime::operator++()
{
{
if(++second>=60)
{
second-=60;
++minute;
}
else if(minute>=60)
{
minute-=60;
++hour;
}
else if (hour>=24)
hour-=24;
}
return *this ;
}

CTime CTime::operator--( int)
{
CTime temp(*this);
second--;
{
if(second>=60)
{
second+=60;
--minute;
}
else if(minute>=60)
{
minute+=60;
--hour;
}
else if (hour>=24)
hour+=24;
}
return *this ;
}
CTime CTime:: operator--()
{
{
if(--second>=60)
{
second+=60;
--minute;
}
else if(minute>=60)
{
minute+=60;
--hour;
}
else if (hour>=24)
hour+=24;
}
return *this ;
}

void CTime::display()
{
cout< }

int main()
{
CTime t1(8,20,25),t2(11,20,50),t;
int s=500;
cout<<"t1为：";
t1.display();
cout<<"t2为：";
t2.display();
cout<<"s为："< cout< cout<<"下面比较两个时间大小：\n";
if (t1>t2) cout<<"t1>t2"< if (t1 if (t1==t2) cout<<"t1＝t2"< if (t1!=t2) cout<<"t1≠t2"< if (t1>=t2) cout<<"t1≥t2"< if (t1<=t2) cout<<"t1≤t2"< cout< t=t1+t2;
cout<<"t1+t2=";
t.display();
t=t1-t2;
cout<<"t1-t2=";
t.display();
cout< t=t1+s;
cout<<"t1+s=";
t.display();
t=t2+s;
cout<<"t2+s=";
t.display();
t=t1-s;
cout<<"t1-s=";
t.display();
t=t2-s;
cout<<"t2-s=";
t.display();
cout< t=t1++;
co

Time类中的运算符重载 (二)