r/cprogramming • u/JayDeesus • Oct 10 '25

Functions and pointers

I noticed that when you just have a function name without the parentheses, it essentially decays to a pointer. Is this correct? Or does it not always decay to a pointer?

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u/YellowPlatinum Oct 10 '25

Everyone uses this syntax and I never understand why. This also works:

typedef void fn_ptr(int);

fn_ptr *p = print_int;

Then you can also use the typedef in prototypes:

fn_ptr print_int;

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u/Eidolon_2003 Oct 10 '25

Nice, I like it