C - Reserved keywords

C99 reserved keywords

This keywords cannot be used as variable names because they are reserved for a particular special function within a C program.

keyword: one of:

`auto`	`enum`	`restrict`	`unsigned`
`break`	extern	`return`	`void`
`case`	`float`	`short`	`volatile`
`char`	`for`	`signed`	`while`
`const`	`goto`	`sizeof`	`_Bool`
`continue`	`if`	static	`_Complex`
`default`	`inline`	`struct`	`_Imaginary`
`do`	`int`	`switch`
`double`	`long`	`typedef`
`else`	`register`	`union`