dev-cpp-users

[Dev-C++] confusing stuff in headers

[Noorez K. <coo...@ho...>]

What does this mean

#ifndef _cplusplus
extern "C" {
#endif

//code hear

#ifndef _cplusplus
}
#endif

where is _cplusplus defined?

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Re: [Dev-C++] confusing stuff in headers

[Daniel K. O. <dan...@ya...>]

Noorez Kassam wrote:

> where is _cplusplus defined?


It's a built-in macro, defined when you are compiling in C++ mode.



Daniel K. O.

Re: [Dev-C++] confusing stuff in headers

[Alvin T. <alv...@th...>]

Daniel K. O. wrote:
> Noorez Kassam wrote:
> 
>> where is _cplusplus defined?
> 
> 
> 
> It's a built-in macro, defined when you are compiling in C++ mode.
> 
> 
> 
> Daniel K. O.

what danny said. that construct is used to allow c programs to be able 
to link to the library that's produced by that code, even if it's c++ 
code. of course, that does NOT mean that you can slap it around any c++ 
header and expect it to work; you can't export any non-c stuff (like 
overloaded functions).

-alvin