The Difference of a .H sfile and .C sfile

[xstabless]

I'm still pretty new to this but i've been learning quite a bit but don't understand the difference of a .h and .c files what are the difference and how you know when to use them.

Thnx

[helios]

.h* are used for declarations (functions, classes, globals, constants, etc.). .c* are used for definitions (i.e. implementations).
For example, for the function sum:

sum.h:

int sum(int a,int b);

sum.cpp:

int sum(int a,int b){
    return a+b;
}

[Umz]

Just outta interest, if I had a file that was built purely of functions I could save it in a .cpp file and include it in the main program file right?

Also if I need to use inheritance would I be better off using a .h for the base class and the different .h files for the classes that inherit?

[helios]

No. .cpp aren't included by other files. They are compiled separately and then their respective object files are linked by the linker.

That's what I do. A habit I picked up from Java. There isn't much difference; It's basically a matter of personal style.