From:	mert0407 AT sable DOT ox DOT ac DOT uk (George Foot)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: newbie math.h problem
Date:	9 Jun 1997 19:15:37 GMT
Organization:	Oxford University, England
Message-ID:	<5nhkop$8dj@news.ox.ac.uk>
References:	<339A8355 DOT 4CF6 AT glasgow DOT prestel DOT co DOT uk>
NNTP-Posting-Host:	sable.ox.ac.uk
Lines:	29
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Michael Johnson (mj AT glasgow DOT prestel DOT co DOT uk) wrote:
: Hello and please take pity on a C newbie,

: I've called the math.h lib and I get a SIGFPE error with what I think is
: a stack dump?  Any it will compile but not run.

: Here's what I've got:

: #include <stdio.h>
: #include <math.h>

: main()
: {
:   double b;

:   printf("the square root of %d is %d\n",b,sqrt(b));
: }

You might like to try giving b a value before using it, and also printing
it as a floating point number rather than an integer. In addition it would
be clearer to write `int main()' and to explicitly return a value before
the end of the function.

If you compile with -Wall and -O, the compiler will point all of these out
to you.

-- 
George Foot <mert0407 AT sable DOT ox DOT ac DOT uk>
Merton College, Oxford

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