CODEWITHSUNDEEP
c++stack-overflowheap-memorystack-memory
Anteara
Anteara

Reputation: 759

2D array 100x100 stack overflow; no error on heap. c++

I've made a 2D array on the stack by doing:

    grid gridArray[100][100] = {{}};

However, I get a stack overflow.

auto gridArray = new grid[100][100]();

If i put it on the heap, I don't get an error.

I don't exactly know why this is; is the stack unable to allocate as much memory as the heap? Is there any danger in the way I'm doing it now?

Thanks.

Upvotes: 2

Views: 382

Answers (1)

John Kugelman
John Kugelman

Reputation: 361927

I don't exactly know why this is; is the stack unable to allocate as much memory as the heap?

That's exactly it. Stack space is limited. As a rule of thumb, if you have more than a few KB of data you should use the heap.

See: What and where are the stack and heap?

Upvotes: 4

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