Is keyword extern is an ulternate for #include?

Or is it possible for me to use a.c file in b.c using extern keyword. If yes what is the syntax.

What is the difference in between these two. (If possible.).

Advantage of one over the other?

Poolan

Simple answer... no.

Definition: The keyword extern is used in a declaration to assert to the compiler that the definition for an object or function is in another compilation unit (or file).

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-Aaron

In other words, extern is used to tell the compiler that the variable mentioned is not actually defined here but in another C file.

File 1 may contain a global variable such as

File 2 needs access to varValues so you specify

The variable is now available in file 2.

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Cow: You're a lawyer too?
Mooseblood (mosquito): Ma'am, I was already a bloodsucking parasite. All I needed was a briefcase!

Then what does extern {"#include a.c"} means

My guess is it means you have a compiler error in your program. I've never seen any syntax like it. If this works for you, please post the code. I'd like to see a working example.

__________________

Cow: You're a lawyer too?
Mooseblood (mosquito): Ma'am, I was already a bloodsucking parasite. All I needed was a briefcase!

I have never seen that syntax. In fact, I think that's impossible. The syntax for extern works in the form:

extern <identifier>

__________________
-Aaron

According to the MS VC++ 6.0 complier: "warning C4091: 'extern ' : ignored on left of 'int' when no variable is declared"