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Baird

Member

Registered: 2023-03-10

Posts: 11

variable as length of array

C++ must has constexpr as length of array, right?

What's the reason that GCC (with c++ command) compiled my .cpp file includes array with variable length?

I saw some topic about C99, is it related?

Last edited by Baird (2023-04-15 14:21:40)

mpan

Member

Registered: 2012-08-01

Posts: 1,205

Website

Re: variable as length of array

By default both g++ and gcc enable GNU extensions, including variable length arrays. To enforce standard behavior, -pedantic-errors must be passed among the options. Best used with the specific -std= option to avoid confusion.

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