Exploring constants and placeholders

- Occasionally when learning something new…you need to pause and reflect.…That's the topic of this movie, pausing and reflecting.…Specifically with regards to variables and values,…it's time for me to go back and get you caught up…on some things that might've already been seen…in an earlier movie, but you have questions about.…Plus I'll introduce a few new concepts.…Things I feel it's about time you knew, especially…if you are new to learning the C programming language.…In this movie I cover creating and using constants.…

Plus I offer additional detail on how to use some…of the printf function's placeholders.…A constant in the C language is different from…an immediate value and a variable.…It's more like a universal value…that doesn't change throughout the code.…Constants are values used consistently…throughout your source code.…They are things that don't change.…They are created by the preprocessor #define directive.…Normally the constant is written in…all caps, letters and underlines only.…

Now when the compiler encounters a constant…