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I thought MSVC added support for C99 at long last a few years ago? IIRC because it was effectively needed for a newer C++ standard, but still.

Also it's 2020, I wasn't even coding when C99 came out and I'm now a "senior" developer, whatever that means. You'll have to pry C99 from my cold, dead hands. Whatever compilers don't support it by now, I don't want to support them.

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What do you think C99 adds that's so important? The only thing that comes to mind is declaring dynamic arrays in which the length is known at the call of the function on the stack. But using malloc isn't so hard regardless.

I haven't programmed in C in over 10 years though, so I could be missing something.

Designated initialisers for structs and unions are a really nice readability improvement. You can use comments if you have to of course.

stdint.h, inline, real booleans, designated initializers, snprintf etc...

I don't think so. I think they added (or will add?) support for C11 and C17, but not C99.

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