CODEWITHSUNDEEP
cfunctiondeclaration
user1005284
user1005284

Reputation:

Declaration of a function in c programming

If a function(say a()) prototype is declared inside a function(say main()) does it mean that it cannot be used in functions other that main() function?

Upvotes: 3

Views: 155

Answers (3)

Tom
Tom

Reputation: 663

In general things that you are able to declare inside a function (e.g. variables) are only in use for that function.

Upvotes: -1

David Heffernan
David Heffernan

Reputation: 612854

Yes that is correct. That is true for all declarations within a particular scope. They are only available within the defining scope.

Of course, you can declare the same function in another scope, but I don't think that's what you meant.

Upvotes: 0

Johannes Schaub - litb
Johannes Schaub - litb

Reputation: 506897

No that does not mean that. If the other functions declare it too, then the function can be used by those other functions too. 

int main(void) {
  void f(void); 
  f();
}

void g(void) {
  void f(void);
  f();
}

In this example, main declared function f locally and called it. But g does that same thing too. Both declarations refer to the same function.

Upvotes: 3

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