Reserved Keywords

Storage Duration and Storage Type Modifier

• auto
• const
• extern
• register -- deprecated
• static
• thread_local
• volatile

Flow Control

• break
• case
• continue
• default
• do
• else
• if
• for
• goto
• return
• switch
• while

Basic Type System

• char
• double
• float
• int
• long
• short
• signed
• unsigned
• void

Custom Type System

• enum
• union
• struct

Type System Helper

• alignas
• alignof
• sizeof
• typedef

Naming Rules Enforced by the Compiler

• Variable and function names must follow this reg-exp: [A-Za-z_][A-Za-z0-9_]+
• Names must start with a letter. Numbers are not allowed.
• Keywords cannot be used as variable or function names.
• Names which start or end with "_" (underscore) are reserved for the compiler.