#define NOARGC  /* no argument count passing */›#define FIXARGC /* don't expect arg counts passed in */›#include <stdio.h>›/*›** Gets an entire string (including its newline›** terminator) or size-1 characters, whichever comes›** first. The input is terminated by a null character.›** Entry: str  = Pointer to destination buffer.›**        size = Size of the destination buffer.›**        fd   = File descriptor of pertinent file.›** Returns str on success, else NULL.›*/›fgets(str, size, fd)›char *  str;›int size, fd;›$(›  int ch;›  char * retval;››  retval = NULL;    /* default */›  for ( ; --size > 0 ; )›  $(›  ch = fgetc(fd);    /* get one */›  if (ch == EOF)›    break;›  if (!retval)›    retval = str;›  *str++ = ch;    /* store it */›  if (ch == '\n')›    break;    /* stop at EOL */›  $)›  *str = '\0';›  return(retval);›$)››