User forums > Using Code::Blocks

Too big array size

(1/1)

haxmando:
I found out that when i declare a quite big array, for example int array[1000][100];
The program will crash, still it can handle smaller arrays. Could you say what is causing this?
I'm using Gnu gcc compiler.

seb_seb0:
this is not a Code::Blocks question - your post will probably be locked.
However, here is an answer for you: if you are allocating an array inside a function (inside  {}), then memory on the Stack will be allocated (the Stack is a temporary memory allocated at function call, and freed at function exit).

The Stack has a limited capacity (it depends on the OS). So when you are allocating a very big array, you are using more memory than the Stack can handle.

And every Stack error leads to a program crash.

For the same reason, recursive functions are a very bad idea.

I suggest you to find a good book and / or web site for learning the programmation, this one for example:
http://www.cppreference.com/wiki/start

regards,

Sebastien

Navigation

[0] Message Index

Go to full version