What are header files in C++?

What are header files in C++?

Header files in C++ are files that contain declarations of functions, classes, and variables. They usually have a .h or .hpp extension.

Why do we need header files?

Header files help in organizing code, allowing for code reuse and separation of interface from implementation.

Can you give me an example of a header file?

Sure! A simple example of a header file could be:

// myfunctions.h
#ifndef MYFUNCTIONS_H
#define MYFUNCTIONS_H

int add(int a, int b);

#endif

How do I include a header file in my C++ program?

You can include a header file using the #include directive, like this: #include "myfunctions.h".