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Path: utzoo!utgpu!water!watmath!clyde!burl!codas!killer!richardh
From: richardh@killer.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: tc bug?
Message-ID: <1654@killer.UUCP>
Date: Sat, 26-Sep-87 19:10:03 EDT
Article-I.D.: killer.1654
Posted: Sat Sep 26 19:10:03 1987
Date-Received: Sun, 27-Sep-87 22:19:46 EDT
References: <236@occrsh.ATT.COM>
Organization: The Unix(R) Connection, Dallas, Texas
Lines: 21
Summary: no bug; %d is int not unsigned

In article <236@occrsh.ATT.COM>, uucp@occrsh.UUCP writes:
> unsigned int xyz = 0x8000 ;
> 
> main()
> {
>   printf("xyz=%d\n", xyz) ;
> }
> 
> ...gives me -32768. Really screws things up trying to read files in 32k
> chunks.

Printf only knows the types of its parameters by looking at the format string.
The conversion char %d specifies a signed int. Use %u (or %o or %x) if you
want to see the 16-bit value as an unsigned. 

The bit pattern 0x8000 IS -32768 when interpreted as a signed two's-complement
decimal number.

richard hargrove
..!inhp4!killer!richardh
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