小编dav*_*ave的帖子

该代码源自"The C Programming Language,Second Edition":

#include <stdio.h>

main()
{
  long nc;

  nc = 0;
  while(getchar() != EOF)
    ++nc;
  printf("%s: %ld\n", "number of characters", nc); 
}

按"输入"键(EOF)后为什么不执行"printf"语句？