Re: 'h' modifier in printf

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#2387

From: Dan Pop
Date: Mon, 25 Mar 1996 12:22

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In <4j06rd$82n@solutions.solon.com> holdp@essex.ac.uk (Holden P) writes:

>printf("Vanilla %X\nWith h  %hX\n", -1, -1);
>
>says
>
>Vanilla FFFFFFFF
>With h  FFFF

Since the type of -1 is not unsigned int and it appears in a context where
the compiler is not required to perform the conversion, this example
invokes undefined behaviour, hence it cannot be used to demonstrate
anything.

Dan
--
Dan Pop
CERN, CN Division
Email: danpop@mail.cern.ch 
Mail:  CERN - PPE, Bat. 31 R-004, CH-1211 Geneve 23, Switzerland

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From: danpop@mail.cern.ch (Dan Pop)
Newsgroups: comp.lang.c.moderated,comp.std.c
Subject: Re: 'h' modifier in printf
Date: 25 Mar 1996 06:22:50 -0600
Organization: CERN European Lab for Particle Physics
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