# Functions

- [Overview of Functions](/c/functions/overview-of-functions.md)
- [Defining Functions](/c/functions/defining-functions.md)
- [Arguments and Parameters](/c/functions/arguments-and-parameters.md)
- [Returning Data from Functions](/c/functions/returning-data-from-functions.md)
- [Variable Scoping](/c/functions/variable-scoping.md)
- [Program: Tic Tac Toe Game](/c/functions/program-tic-tac-toe-game.md)
- [Recursion](/c/functions/recursion.md)
