C in 100 Seconds: Store Five Numbers in One Variable — Arrays | Episode 10

An array holds multiple values of the same type, all under one name. Curly braces initialize it. Indexing starts at zero. sizeof gives total bytes — divide by one element to get the count. Loop from zero to length, access each element with bracket notation. Arrays are mutable — assign to any index to change its value. Five elements in, five elements out, one modified to ninety-nine. Student code: https://github.com/GoCelesteAI/c-in-100-seconds/tree/main/episode10 What You'll Learn: • Declaring and initializing arrays with curly braces • Zero-based indexing — first element is [0] • sizeof trick to get array length • Iterating with a for loop • Modifying elements by index Next: Episode 11 — Strings #c #programming #100seconds #learnc #arrays #index #sizeof #iteration #tutorial Tags c arrays, array index c, sizeof c, iterate array c, zero based indexing, c tutorial 2026, c beginner, 100 seconds, learn c, coding tutorial