Posted on 2009-05-12 22:25
歲月流逝 閱讀(672)
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#include
using namespace std;
class Clock
{
public:
Clock(int NewH=0,int NewM=0,int NewS=0);
void ShowTime();
// void operator ++();
friend void operator ++(Clock c1);
// void operator ++(int);
friend void operator ++(Clock c1,int);
private:
int Hour,Minute,Second;
};
Clock::Clock(int NewH,int NewM,int NewS)
{
if(NewH>=0&&NewH <24&&NewM>=0&&NewM <60&&NewS>=0&&NewS <60)
{
Hour=NewH;
Minute=NewM;
Second=NewS;
}
else
{
cout <<"Time error!" <=60)
if(c1.Second>=60)
{
// Second=Second-60;
c1.Second=c1.Second-60;
// Minute++;
c1.Minute++;
// if(Minute>=60)
if(c1.Minute>=60)
{
// Minute=Minute-60;
c1.Minute=c1.Minute-60;
// Hour++;
c1.Hour++;
// Hour=Hour%24;
c1.Hour=c1.Hour%24;
}
}
cout <<"++myClock";
}
//void Clock::operator ++(int)
void operator ++(Clock c2,int)
{
// Second++;
c2.Second++;
// if(Second>=60)
if(c2.Second>=60)
{
// Second=Second-60;
c2.Second=c2.Second-60;
// Minute++;
c2.Minute++;
// if(Minute>=60)
if(c2.Minute>=60)
{
// Minute=Minute-60;
c2.Minute=c2.Minute-60;
// Hour++;
c2.Hour++;
// Hour=Hour%24;
c2.Hour=c2.Hour%24;
}
}
cout <<"myClock++";
}
int main()
{
Clock myClock(23,59,59);
cout <<"First time output:";
myClock.ShowTime();
myClock++;
myClock.ShowTime();
++myClock;
myClock.ShowTime();
}