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Clock &Clock::operator++ ()
{
second++;
if (second >= 60)
{
second -= 60;
minute++;
if (minute >= 60)
{
minute -= 60;
hour = (hour + 1) % 24;
}
}
return *this;
}
Clock Clock::operator++ (int)
{
Clock old = *this;
++ (*this);
return old;
}
#include <iostream>
using namespace std;
class Clock
{
public:
Clock (int hour = 0, int minute = 0, int second = 0);
void showTime () const;
Clock& operator++ ();
Clock operator++ (int);
private:
int hour, minute, second;
};
Clock::Clock (int hour, int minute, int second)
{
if (0 <= hour && hour < 24 && 0 <= minute && minute < 60 && 0 <= second && second < 60)
{
this->hour = hour;
this->minute = minute;
this->second = minute;
}
else
{
cout<<"ERROR"<<endl;
}
}
void Clock::showTime () const
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}
Clock &Clock::operator++ ()
{
second++;
if (second >= 60)
{
second -= 60;
minute++;
if (minute >= 60)
{
minute -= 60;
hour = (hour + 1) % 24;
}
}
return *this;
}
Clock Clock::operator++ (int)
{
Clock old = *this;
++ (*this);
return old;
}
int main ()
{
Clock myClock (23, 59, 59);
myClock.showTime ();
(myClock ++).showTime ();
}
#include <iostream>
using namespace std;
class Clock
{
public:
Clock (int hour = 0, int minute = 0, int second = 0);
void showTime () const;
Clock& operator++ ();
Clock operator++ (int);
private:
int hour, minute, second;
};
Clock::Clock (int hour, int minute, int second)
{
if (0 <= hour && hour < 24 && 0 <= minute && minute < 60 && 0 <= second && second < 60)
{
this->hour = hour;
this->minute = minute;
this->second = minute;
}
else
{
cout<<"ERROR"<<endl;
}
}
void Clock::showTime () const
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}
Clock &Clock::operator++ ()
{
second++;
if (second >= 60)
{
second -= 60;
minute++;
if (minute >= 60)
{
minute -= 60;
hour = (hour + 1) % 24;
}
}
return *this;
}
Clock Clock::operator++ (int)
{
Clock old = *this;
++ (*this);
return old;
}
int main ()
{
Clock myClock (23, 59, 59);
myClock.showTime ();
(myClock ++).showTime ();
(++myClock).showTime ();
return 0;
}
这是全部代码,最后输出三个值,而最后一个输出的值是自增过后的值