本代码是《C／C++程序员实用大全》的配套代码。网络转载

				#include 
				
				void main(void)
				 { 
				   char letter;
				   int count = 0;
				
				   while ((letter = cin.get()) != -1)
				     {
				       cout.put(letter);
				       if ((letter == '\n') && (++count == 10))
				         break;
				     }
				 }