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From: Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: function pointer question
Date: Fri, 02 Jan 2026 11:43:01 -0800
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bart <bc@freeuk.com> writes:
[...]
> If you have any function that returns type T (including when T is void
> like your examples), then its type is 'function(...)returning T'.
>
> A pointer to such a function will have a type:
>
>   'pointer to function(...)returning T'.
[...]

Just to clarify, the "..." refers to the list of parameter types, in
this case "pointer to function(char [][64], int, int, const char *)
returning void)".  It's not a literal `...` token.

I mention this because `void func(...)` is valid starting in C23; it's a
variadic function with no fixed parameters.  `void func(...)` is not
compatible with, for example, `void(int)`.

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
void Void(void) { Void(); } /* The recursive call of the void */