Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!mailrus!uflorida!novavax!twwells!bill
From: bill@twwells.uucp (T. William Wells)
Newsgroups: comp.lang.c
Subject: Re: hardcoded constants
Message-ID: <270@twwells.uucp>
Date: 23 Dec 88 10:53:00 GMT
References: <2636@m2-net.UUCP> <1104@goofy.megatest.UUCP> <267@twwells.uucp> <410@aplcen.apl.jhu.edu>
Reply-To: bill@twwells.UUCP (T. William Wells)
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In article <410@aplcen.apl.jhu.edu> arrom@aplcen.UUCP (Ken Arromdee (600.429)) writes:
: >How about sizeof('\0') is equal to the size of an integer, which is
: >unlikely to be 1?
: >Remember, in C, character constants are integer constants.
:
: I was under the impression that "sizeof" is done at compile time and isn't
: really a function, so this would correctly return 1.

Well, you are right that sizeof is done at compile time, and it isn't
a function. But it won't return 1.

Sizeof is an operator. The thing it is operating on is a character
constant. In C, a character constant *is* an integer. Thus sizeof a
character constant must the the same as the sizeof an integer. (Now,
for the gurus: am I right in saying integer, or should I say `of some
integral type'?)

---
Bill
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