header file

[masiht]

Can any one tell me what is header file and give me some examples .I will be thankfull.

[Zhuge]

A header file is supposed to store the definitions of a class and any function prototypes.

For example:
.h file

void func1();
int func2(int a, int b);

.cpp file

void func1() {
    // do stuff
    return;
};
int func2(int a, int b) {
    return a - b;
};

[masiht]

what is the difference between .h header file and cpp header file ?>

[Zhuge]

.cpp is not a header file, it is a source file, and is the part of the program that is actually compiled. It contains the implementation of non-template functions and methods.

.h files are just the prototypes of non-template methods and functions, and well as the definitions of classes. It is used mainly so other .cpp files can tell what functions will be defined in other .cpp files.

[masiht]

In the examples above there is no .h in the header files ?

[seymore15074]

One small note on terminology: declarations are typically located in the header file and definitions, or implementations, are generally located in the source file.

[eker676]

Header file

#include <iostream>
#include <myfile.h>