C in 100 Seconds: #define const enum — When to Use Each | Episode 14

Three ways to make values that don't change. #define replaces text before compilation — no type, no memory, just substitution. const creates a typed variable the compiler won't let you modify. enum gives names to a set of integers — RED is 0, GREEN is 1, BLUE is 2. PI becomes 3.14 through define. Year stays locked at 2026 through const. Color resolves to an int through enum. Each defined a different way, all locked in place. Student code: https://github.com/GoCelesteAI/c-in-100-seconds/tree/main/episode14 What You'll Learn: • #define — preprocessor text substitution, no type • const — typed variable that can't be changed • enum — named integers, auto-incrementing from 0 • When to use each one Next: Episode 15 — Type Casting #c #programming #100seconds #learnc #const #define #enum #macros #preprocessor #tutorial Tags c constants, define c, const c, enum c, preprocessor macros, define vs const, c tutorial 2026, c beginner, 100 seconds, learn c, coding tutorial