C++ File Organization

C++ File Organization

When writing C or C++ code, it is organized into two main types of files:

Header files
Source files

Header files

A header file contains definitions that are used across multiple source files.
Header files end in .h
A header file is included with a #include directive
There are two types of header files:
1. System headers are built-into the system. They are included using angle-brackets and typically do not include the .h file extension:
```
#include <iostream>
```
2. Local headers are programmer-defined headers. They are included using double-quotes.
```
#include "myfile.h"
```

Source files

Your source files contain the C/C++ code.
C files end with a .c extension.
C++ files end with a .cpp extension.