C++ newbie question

Here my question.I want to know what headers would be good to use in C++ if i want to use this headers i seen in a sourcecode i been reading?Or can i use C and C++ in the same program?But not sure how to do sockets in c++ and how can i do that in C++ same as C?

#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <poll.h>
#include <features.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <sys/file.h>
#include <errno.h>
#include <ctype.h>

Your question is not entirely simple to answer generically, because whatever generic answer is given, it would have dozens of "except if".

However, if we consider only header files in <> [where <> is used to indicate system/compiler delivered header files], then using those functions from C++ SHOULD be fine.

As you may know, C++ is a superset of C, so to a large extent, C++ will work just like C, but also has "more" to offer.

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Mats

Can i use <sys/socket.h> and <socket.h> in C++ or is that for C?

Unless your platform is so archaic that it doesn't provide C++-compatibility in its C headers, you can use them in C++. There are very few C libraries you can't use in C++.

Then how do i get sockets to work in C++ and what headers will not work with C++?

Quote:

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Originally Posted by Whiteghost

Then how do i get sockets to work in C++ and what headers will not work with C++?

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By including those headers you listed...?

i didn't know socket.h works with C++:)

Quote:

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Originally Posted by Whiteghost

i didn't know socket.h works with C++:)

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Are you eventually going to try and compile a program with it, or just wait until someone absolutely convinces you beyond a shadow of a doubt? You could have found this out yourself in about three minutes.

Quote:

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Originally Posted by Whiteghost

can i use C and C++ in the same program?

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Yes you can. But: to link to a function written in C, you have to declare it as bing a C function, using either of the following methods. Headers that come with your compiler will do this for you.

Code:

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extern "C" {

    int cfunc();
}

extern "C" int cfunc();

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If you are trying to use C headers that are not written to be linked with c++, you may need to wrap the #include in an extern "C" block.

The best thing about this though is that if it links, it works. The only thing to what out for is passing arguments incompatible with C to a C function, such as non-POD objects or some C++ functions (as pointers).

Thanks King Mir i will try that out.