Variable length arrays (VLA) in C and C++

Question

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Variably modified array at file scope

I have some concepts about the VLA and its behavior

Answer 1

C++ doesn't support VLAs, period. The reason the second code snippet works in C++ is that the const keyword creates a compile-time constant in C++; in C, it doesn't.

C99 doesn't support VLAs outside of block scope, period, regardless of how you declare the size variable. Note that C2011 makes VLA support optional.