从书上抄的一个程序：
# include<iostream.h>
# include<time.h>
class Time
{
private:
    int hr,min,sec;
public:
    Time();
    void Reset(int h,int m,int s);
    void ShowTime();
};
Time::Time()
{
hr=min=0;
sec=1;
}
void Time::Reset(int h,int m,int s)
{
    hr=h;
    min=m;
    sec=s;
}
void Time::ShowTime()
{
    cout<<"\n Time 对象:"<<hr<<":"<<min<<":"<<sec;
}
void SetTimeObject(Time *pWatch);

int main()
{
    Time MyWatch;
    cout<<"\n几点了？\n\n";
    SetTimeObject(&MyWatch);
    MyWatch.ShowTime();
    cout<<"\n\n结束，谢谢!\n\n";
    return 0;
}
在VC6.0运行时总是提示：Linking...
1.obj : error LNK2001: unresolved external symbol "void __cdecl SetTimeObject(class Time *)" (?SetTimeObject@@YAXPAVTime@@@Z)
Debug/first6.exe : fatal error LNK1120: 1 unresolved externals
执行 link.exe 时出错.
求高手帮忙解决，小弟感激不尽。