This video tutorial introduces the hash define preprocessor directive, explaining its use for creating symbolic constants and macros. It covers examples of symbolic constants, such as debug build, and macros that require arguments. The tutorial emphasizes the importance of naming conventions, using all capital letters for macros and constants. An example of a macro to find the maximum of two values is provided, illustrating text substitution before compilation. The video concludes with a preview of using hash define in Visual Studio, highlighting potential pitfalls and best practices.

What is the primary purpose of the hash define directive in C++?

• To create loops

• To define symbolic constants and macros

• To manage memory allocation

• To handle exceptions

How can you differentiate between a symbolic constant and a macro in C++?

• By their color in the IDE

• By the number of arguments they take

• By their position in the code

• By their length

What is the convention for naming macros and symbolic constants in C++?

• Using numbers

• Using all capital letters

• Using lowercase letters

• Using special characters

What happens to preprocessor directives during the compilation process?

• They are ignored

• They are executed as code

• They are replaced with actual values

• They are converted to comments

In the context of hash define, what does a macro require that a symbolic constant does not?

• A return statement

• An argument

• A specific data type

• A loop structure