Keywords are predefined, reserved words used in programming that have special meanings to the compiler. It helps us to use the functionality of C language. We cannot use it as a variable name, constant name, etc. There are 32 reserved keywords in the C language.

** All keywords must be written in lowercase.

Table of 32 keywords in C

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