From:	Peter Danielsson <e96pd AT efd DOT lth DOT se>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Help! Why is my program crashing?
Date:	Tue, 16 Jun 1998 16:17:39 +0200
Organization:	student
Lines:	23
Message-ID:	<35867E83.E01@efd.lth.se>
Reply-To:	e96pd AT efd DOT lth DOT se
NNTP-Posting-Host:	cie96ojo.student.lth.se
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Why does my program crash all the time. It's a simple program, only a
few lines:

int WIDTH=513;
int *mapheight;

void initmapheight(int *n)//allocateing memory
{
 n=(int*)calloc((long)513*513,sizeof(int));
 if(n==NULL)
	 exit(-1);
}
void reset(int *m,int W2)//set to zero. Here it crashes
{
 for(int a5=0;a5<W2;a5++)
	 for(int q=0;q<W2;q++)
		m[(long)a5*W2+q]=0;	 
}
void main(int argc, char *argv[])
{
initmapheight(mapheight);
reset(mapheight,100);
}

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