C - Language Terminology

There are some specific Terms every one have to memorize who want to learn C Language

KeyWords

In C Language some words are predefined means have special meanings for C - Language and Compiler of C Language recognize these words and behaves accordingly.

• There are 32 Keywords in C
• C Keywords are also called as Reserved words .

32 Keywords in C Programming Language

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

Constants.
Constants are basically values we use in Our Program. There are four types of constants are available in C-Language,

• Character Constants
• String Constants
• Integer Constants
• Floating Point Constants

Character Constants.

Only one character from ASCII Character Set enclosed within Single Quotes (Apostrophes signs) is called Character Constant, There is a special situation when two characters are enclosed in Single Quotes '\0'.

'A', '1', '#' are all valid examples of Character Constants.

String Constants.
String constants means series of characters one or more enclosed in Double Quotes (Inverted Commas) ,
here are some examples

"A" , "Asif", "I Love Pakistan" , "House # 45", "12345" are all valid string examples.

Integer Constants.

Integer Constant means the Numbers without Decimal Point, like 100, 234, 56

Floating Point Constants.

Floating Point Constants means Numbers with Decimal Points, like 23.45, 0.5, 4.555;