Function in another function

Question

If we have two function e.g A and B. And we call function B in the function A. Is it necessary to define function B before defining function A?

Why don't you just try it? It's faster. – İsmet Alkan Jan 23 '14 at 14:31 — İsmet Alkan, Jan 23 '14 at 14:31

score 7 · Answer 1 · answered Jan 23 '14 at 14:30

7

No, you can declare the functions and define them afterwards.

//declarations
void foo();
void goo();

//definitions
void foo() { goo(); }
void goo() { foo(); }

//...
foo(); //stackoverflow, but hey, it compiles

answered Jan 23 '14 at 14:30

Luchian Grigore

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score 1 · Answer 2 · edited May 23 '17 at 10:25

1

There are no such dependency. You can refer this link.

Particularly, in case of DLL when we are using function pointers. we need to store the address of the function at runtime only after library gets loaded (LoadLibrary()).

edited May 23 '17 at 10:25

Community

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1

answered Jan 23 '14 at 14:35

Rasmi Ranjan Nayak

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score 0 · Answer 3 · answered Jan 23 '14 at 14:35

0

Function declarations

void B();
void A();

Function definitions

void B() 
{ 
    A(); 
}
void A() 
{ 
    B(); 
}

//...
A();

I hope your question will be clear by this code.

you can implement in this manner.

answered Jan 23 '14 at 14:35

Govinda Rajbhar

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Function in another function

3 Answers3