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From: jthomas@nmsu.edu (James Thomas)
Newsgroups: comp.sys.hp
Subject: Extraneous error code under 3.1?
Message-ID: <JTHOMAS.89Nov17162045@tecate.nmsu.edu>
Date: 17 Nov 89 23:20:45 GMT
Sender: news@nmsu.edu
Distribution: comp
Organization: NMSU Computer Science
Lines: 27

System: HP 9000/840 under HP-UX 3.1

When we run the following code in either form (with the fgets or fscanf),
the first fgets/fscanf call returns an error code of 25 .  If that is
cleared, following calls do not touch errno .  Would someone else please
try this and report back your results?

Thank you,
Jim Thomas

------------------------------ 8< ------------------------------

#include <stdio.h>
	extern	int	errno;

main ()
{
  FILE* fd;
  char s[20];
  
  fd = fopen ("tmp","r");
  printf("using fscanf errno = %d",errno);
/*  fgets(s,20,fd); */
  fscanf(fd,"%s",s);
  printf("\n after read errno = %d\n",errno);
  printf(" string is %s\n",s);
}