if(hh>24)
hh=24;
static Time result(hh,mm,ss);
return result;
}
Time Time::operator-(Time t)
{
int borrow,hh,mm,ss;
ss=getsecond()-t.getsecond();
if(ss<0)
{
ss =60;
borrow=1; // 借位标记
}
else borrow=1;
mm=getminute()-t.getminute()-borrow;
if(mm<0)
{
mm =60;
borrow=1;
}
else borrow=0;
hh=gethour()-t.gethour()-borrow;
if(hh<0)
hh =24;
static Time result(hh,mm,ss);
return result;
}
void main()
{
Time now(2,24,39);
Time start(17,55);
Time t1=now-start,t2=now start;
cout<<"输出结果:"<<endl;
cout<<" now: "; now.disp();
cout<<" start:"; start.disp();
cout<<" 相差: "; t1.disp();
cout<<" 相加: "; t2.disp();
}
本程式的执行结果如下：
输出结果：
now:2:24:39
start:17:55:0
相差:8:28:39
相加:20:19:39
