Learn and Master C Programming - #include': Angle Brackets (<>) versus Double Quotes ("")

The video tutorial explains the use of hash include in programming, focusing on how it allows the inclusion of content from one file into another. It discusses the differences between using angle brackets and quotation marks, which are compiler-dependent. The tutorial also covers how the preprocessor searches for files, the advantages of using quotation marks for personal header files, and how to specify additional include directories both via command line and within Visual Studio.

What happens if an include file cannot be found in the specified directories?

What is the significance of the include environment variable in the context of file inclusion?

How can additional include directories be specified in the command line?