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From: gwyn@brl-smoke.ARPA (Doug Gwyn )
Newsgroups: comp.lang.c
Subject: Re:  Long integers
Message-ID: <6439@brl-smoke.ARPA>
Date: Sun, 20-Sep-87 20:18:18 EDT
Article-I.D.: brl-smok.6439
Posted: Sun Sep 20 20:18:18 1987
Date-Received: Mon, 21-Sep-87 00:38:22 EDT
References: <9266@brl-adm.ARPA>
Reply-To: gwyn@brl.arpa (Doug Gwyn (VLD/VMB) <gwyn>)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 10

In article <9266@brl-adm.ARPA> moss@BRL.ARPA (Gary S. Moss (SLCBR-VL-V)) writes:
>The reason for this is that integer arguments are *always* widened to LONG
>when passed in to a function, so the %d format is meant for LONGS.

This is completely wrong!  Pre-ANSI C function arguments are widened,
all right, but not to (long).  All non-long integral types are widened
to (int) (or (unsigned int), same size).  %ld should not be used with
(int) parameters to *printf(), but only with (long) parameters.

Scanf(), since it takes pointers, is unaffected by parameter widening.