🚀 go-pugleaf

In article <474ljk$551@nic.dataphone.se>, skorpio@dataphone.sep says...
>
>In message <46d9ak$c5h@ixnews7.ix.netcom.com> - techman2@ix.netcom.com (Peter 
>Dennis ) writes:
>
>:> float array[x][y];
>
>First C++ version
>
>float **array;
>
>array = new float*[x];
>for(i = 0;i < x;i++)
> { array[i] = new float[y]; }
>
>and then C
>
>float **array;
>
>array = (float**)malloc(sizeof(float)*x);
                          ^^^^^^^^^^^^
Make this sizeof(float*).

There is no need to cast the return of malloc and, since it can conceivably
hide errors, you might want to consider avoiding unnecessary casts.

Of course, you should always test any allocatio for success, before trying
to use it.  I assume you left the test out for brevity's sake.

>for(i = 0;i < x;i++)
> { array[i] = (float*)malloc(sizeof(float)*y); }

The c.l.c faq has several examples of this (Q6.16).  It is available for 
anonymous ftp from rtfm.mit.edu /pub/usenet/comp.lang.c.

-- 
John R Buchan           -:|:-     Looking for that elusive FAQ?  ftp to:
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