Mail Archives: djgpp/1999/07/23/11:46:39
From: | William Roeder <broeder AT titan DOT com>
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Newsgroups: | alt.comp.lang.learn.c-c++,comp.lang.c++,comp.os.msdos.djgpp,comp.os.msdos.programmer
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Subject: | Re: Help with Casts...
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Date: | Thu, 22 Jul 1999 11:37:56 -0400
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Organization: | DBA Systems Inc.
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Lines: | 48
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Message-ID: | <37973AD4.751B358@titan.com>
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References: | <7n6153$eqc$1 AT autumn DOT news DOT rcn DOT net>
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NNTP-Posting-Host: | dba105-224.dba.titan.com
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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Reply-To: | djgpp AT delorie DOT com
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Tom wrote:
>
> I'm am having trouble understanding casts.
OK.
> Let's say I want to call a program and it takes three variables.
Programs don't take variables. They may take arguments, but that is OS
dependent. Do you mean a function?
> Two of those variables are casts and are supposed to return
> values from what I understand.
casts are not variables and only function calls can return values. You
do not understand.
> How do I get those two values.
Questions end with a question mark (?)
>
> Example;
>
> int playcdtrack(tracknumber, *startingposition, *endingposition)
If this is supposed to be a prototype it is incomplete:
int playcdtrack(<insert type> tracknumber, <insert pointer type>
*startingposition, <insert pointer type> *endingposition);
>
> How do I get the variables startingposition and endingposition of let's say
> track #1?
RTFM?
>
> If anyone can help I would greatly appreciate. Thanks.
>
> Tom
1. Device control is operating system dependent and not part of the
standard C++ language.
2. Buy some reference books about your operating system.
3. Read the FAQs at:
http://www.eskimo.com/~scs/C-faq/top.html -- C language FAQ
http://www.cerfnet.com/~mpcline/C++-FAQs-Lite/ -- C++ language FAQ
4. Research the following newsgroups before posting:
news:comp.programming
news:comp.unix.programmer
news:comp.os.msdos.programmer
news:comp.os.ms-windows.programmer.win32
news:borland.public.cppbuilder (via forums.inprise.com newsserver)
news:borland.public.cpp.language (via forums.inprise.com newsserver)
news:microsoft.public.vcc.language (via msnews.microsoft.com newsserver)
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