lib/stdio/gets.c

   1 /*
   2  * gets.c - read a line from a stream
   3  */
   4 /* $Header$ */
   5
   6 #include        <stdio.h>
   7
   8 char *
   9 gets(char *s)
  10 {
  11         register FILE *stream = stdin;
  12         register int ch;
  13         register char *ptr;
  14
  15         ptr = s;
  16         while ((ch = getc(stream)) != EOF && ch != '\n')
  17                 *ptr++ = ch;
  18
  19         if (ch == EOF) {
  20                 if (feof(stream)) {
  21                         if (ptr == s) return NULL;
  22                 } else return NULL;
  23         }
  24
  25         *ptr = '\0';
  26         return s;
  27 }