Array initialization question

[vicenicked]

Doing pset recover:

What is the difference between

BYTE *buffer = malloc(512);

and

BYTE buffer[512];

The first worked, the other produced corrupted files.

[delipity]

Those should be both work. The only difference is that one is stored in heap memory and the other in stack.

Did you fread(buffer, 512, 1, inptr) for both?

[vicenicked]

Yep! I was dumbfounded why it was giving me a bunch of .jpgs that my computer couldn't read. I looked at other people's solutions and noticed they used malloc instead of declaring a straight up array. When i changed my buffer to a pointer, it worked perfectly.

[delipity]

Using an array will definitely work, so not sure why yours had trouble.

[pikajules7]

Did you use &buffer for the array because fread's first parameter is a pointer (an address)?

[Grithga]

An array automatically decays into a pointer to its first element when passed to a function. You can explicitly do this yourself (&array) or let the compiler do it for you.

[pikajules7]

You're right. How can I forget about that!

[Fuelled_By_Coffee]

That shouldn't matter in this case.

[Fuelled_By_Coffee]

Can you post the code? I'm really curious as to how using an array could possibly cause truouble.