Programming Point

A keyword is a reserved word.
You cannot use it as a variable name, constant name etc.
There are only 32 reserved words (keywords) in C language.
A list of 32 keywords in c language is given below:

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

We will learn about all the C language keywords later.