才学C++。想请教一个问题。关于delay的

我们老师要我们找写循环体代替delay(time)但是有些细节问题我不明白怎么写。跪求大神们解答。

前面是

int title ();                                //接受用户的输入
void diskcopy ();                           
void diskformat ();        
void diskcompare ();   
void diskbackup();                           
void (*operdisk[]) () = { diskcopy , diskformat , diskcompare , diskbackup , d};

void main ()
{ int choice = title();                        //调用函数
  while ( choice != 4 )
  { ( * operdisk [chocie] ) ();
  cout << endl;
      choice = title ();
  }
}

其中一个
void diskcopy ()
{ cout << " disk copy operation..." << endl;
  cout << " copy disk from driver A to driver B..." <<endl;
delay(time)
    cout << " disk copy completely! " << endl;
delay(time)
}

这个delay(time)该怎么把循环体加进去才不会出现error