#include<iostream.h>
#include<windows.h>
class clock
{
private:
int hour;
int minute;
int second;
public:
clock(int h,int m,int s);
void run_time(int s);
void show_time();
};
clock::clock(int h,int m,int s)
{
hour=h;
minute=m;
second=s;
}
void clock::show_time()
{
cout<<hour<<":"<<minute<<":"<<second<<endl;
}

void clock::run_time(int s)
{
for(int i=0;i<s;i++)
{
second++;
if(second==60)
{
minute++;
second=0;

if(minute==60)
{
hour++;
minute=0;
if(hour==24)
{
hour=0;
}

}

}
system("cls");
show_time();//函數(shù)調(diào)用
Sleep(1000);//該句的頭文件是#include<windows.h>，沉睡效果，可不要
}
}

void main()
{
clock a(22,47,58);//初始時間
a.show_time();//輸出
a.run_time(10);//補(bǔ)充的走時函數(shù)
}