Using typedef keyword in c

Question

I was going through one of the lecture slide taught in the class which included a typedef keyword in it. As opposed to normal use of typedef keyword where we usually put a alias for particular data, there was no alias put up for that example. Following is the example:See the typedef in the slide

Is the use of typedef correct, or am I interpreting differently?

If there were two function pointers with same declaration,ptr would be alias to which of the function pointers? — vikrant waje, Dec 09 '17 at 17:21
A **typedef** for type-alias `foo` has the exact same syntax as a declaration of variable `foo`, of the same type, but with the reserved word `typedef` **among** the *storage class specifiers* in the declaration. — Antti Haapala -- Слава Україні, Dec 09 '17 at 18:00

score 2 · Answer 1 · edited Dec 09 '17 at 17:14

2

It is a function pointer. And it is perfectly valid syntax.

Ptr is declared as a pointer to a function where the function takes two int arguments and return an int. Here you can use Ptr as the alias to the typedefed type.

edited Dec 09 '17 at 17:14

melpomene

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answered Dec 09 '17 at 17:09

user2736738

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@melpomene.: Thanks for the edit. Appreciate it. – user2736738 Dec 09 '17 at 17:15

Using typedef keyword in c

1 Answers1