in linux

why in c++ header files with .h extension are not allowed !

but

in c , we can use , .h extesnion files easily !

I understand it's for the potential clashes with the standard C libraries, it was arbitrarily decided upon a while ago. I't part of the 1998 C++ standard

Now if i ask why we are using .h in c than what would you say !

C came first, they decided to use ".h" for header files because it works. There are enough happy C programmers that it is not likley to change

Why would you expect 2 languages to use the same conventions?

1 members found this post helpful.

thanks ... pixellany !

Moved: This thread is more suitable in <Programming> and has been moved accordingly to help your thread/question get the exposure it deserves.

There is nothing that prevents those developing in C++ to use .h as the extension for header files. Some developers like to use .hpp, but AFAIK, there is nothing in the C++ standard that mandates that one uses that particular extension. I've worked on many projects where .h has been used.

As for clashes with standard C header files, that's nonsense too. The compiler will attempt to find the header file(s) specified by the programmer by searching its include path(s). Which ever header file that is found first is the one that is used -- and please note, that a header file is NOT a library. It is a file containing the specification of the constants, macros, functions, classes, and/or even templates that are available for one to use within a library (or other source file module). Typically header files do not contain any code; the exception is when defining templates.

1 members found this post helpful.

thanks ... dwhitney67 !