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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: memcpy not memcpying?
Date: Fri, 01 Nov 2019 10:19:09 -0700
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DFS <nospam@dfs.com> writes:
[...]
> printf("%d\n",sizeof(char*));
> 8	

sizeof yields a result of type size_t.  Use "%zu", not "%d".

Using "%d" can appear to work depending on how arguments are passed, but
it's unreliable.

If remembering all the formats is too much trouble (it is for me
sometimes), you can convert to a type that you know how to print
and that you're confident is wide enough to hold the value:

    printf("%lu\n", (unsigned long)sizeof(char*));

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for Philips Healthcare
void Void(void) { Void(); } /* The recursive call of the void */