text: #include <stdio.h>
  #define STLEN 10
  int main(void)
  {
      char words[STLEN];
      int i;
      puts("Enter strings (empty line to quit):");
      while (fgets(words, STLEN, stdin) != NULL && words[0] != '\n')
      {
          i = 0;
          while (words[i] != '\n' && words[i] != '\0')
          {
              i++;
          }
          if (words[i] == '\n')
          {
              words[i] = '\0';
          }
          else
          {
              while (getchar() != '\n')
              {
                  continue;
              }
          }
          puts(words);
      }
      puts("done");
      return 0;
  }