In c , how come function may have several declarations but only one definition?

[mahor1989]

In c , how come function may have several declarations but only one definition? Can someone elaborate on that plz

[MrViggy]

Can you define "several declarations"? As far as I know, in both C and C++ functions can have only one declaration and definition.

Viggy

[Lindley]

A declaration says "Such a thing exists." It doesn't matter how many times you say this, so long as you're consistent about the interface. (C++ doesn't even require that, since it allows function overloading.)

A definition says "This is what it is." If you say that multiple times, the linker will shrug in confusion about which one is really what it is.

[MrViggy]

Okay, if you look at the question that way, yes.

I read the OP's question, and thought of overloaded functions, who's declarations are not the same (even if the function name is).

Viggy