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Path: utzoo!decvax!decwrl!pyramid!hplabs!oliveb!felix!birtch!ken
From: ken@birtch.UUCP (Ken B)
Newsgroups: net.lang.c,net.micro.att
Subject: Why doesn't this work? (3B2 problem)
Message-ID: <276@birtch.UUCP>
Date: Thu, 20-Mar-86 16:40:16 EST
Article-I.D.: birtch.276
Posted: Thu Mar 20 16:40:16 1986
Date-Received: Sat, 22-Mar-86 07:58:56 EST
Distribution: na
Organization: Birtcher, Santa Ana, Calif.
Lines: 56
Xref: decwrl net.lang.c:8047 net.micro.att:1054

We have a 3B2/300, and I wrote this program to help debug our spooler problem
(another story), why doesn't it work?  It never read's an EOF from stdin,
and continues to dump 'nulls' to stdout.  (Note: I'm just learning 'c',
so please no flames on programming style, or lack of it)

All the program does is number each line it reads from stdin.

--------- code follows ---------
#include <stdio.h>

main()
{
	int i=1;
	char c;

	c=getchar();
	if (c!=EOF)
		printf("%d     ",i++);
	while (c!=EOF) {
		putchar(c);
		if (c=='\n') {
			c=getchar();
			if (c!=EOF)
				printf("%d     ",i++);
		}
		else c=getchar();
	}
	putchar(EOF);
}
------ end of code ------

The system is running Sys V un*x, if that helps.  The program works, except
that it never stops running. I am forced to interrupt it, which writes the
data out, with alot of nulls on the 'last line'.  Am I doing something wrong?

This exact program works correctly on our Pyramid 90x, so I know its not just
my program.

If anyone out there has some ideas on why it doesn't ever read an EOF, I'd
be very grateful to know why.

Note: how I use it is:

ls -la /bin | number > outputfile
     or
ls -la /bin | number

Niether method works correctly (i.e. stops executing)

Thank you,

Ken Brown
-- 
	uucp:  ...{!glacier!oliveb,!ihnp4!trwrb} !felix!birtch!ken

These ramblings are my own, and are surely not those of my employer.