Category:C Data Type

Classic basic primitive types may include:

Character (character, char);
Integer (integer, int, short, long, byte) with a variety of precisions;
Floating-point number (float, double, real, double precision);
Fixed-point number (fixed) with a variety of precisions and a programmer-selected scale.
Boolean, logical values true and false.
Reference (also called a pointer or handle), a small value referring to another object's address in memory, possibly a much larger one.

More sophisticated types which can be built-in include:

Tuple in Standard ML, Python, Scala
List in Common Lisp, Scheme, Haskell
Complex number in C99, Fortran, Common Lisp, Python, D, Go
Rational number in Common Lisp, Haskell
Associative array in Perl, Python, Ruby, Javascript, Lua, D, Go
First-class function, in all functional languages, Javascript, Lua, D, Go, and in newer standards of C++, Java, C#, Perl

type	width	default	signed range	unsigned range
bool	1 bit	unsigned	-	0, 1
char	8 bits, 1 byte	signed	-128 to +127	0 to +255
short	16 bits, 2 bytes	signed	-32,768 to +32,767	0 to +65,535
int	16 bits, 2 bytes	signed	-32,768 to +32,767	0 to +65,535
long	32 bits, 4 bytes	signed	-2,147,483,648 to +2,147,483,647	0 to +4,294,967,295
float	4 bytes IEEE 754	signed		1.175494351E-38 to 3.402823466E+38
pointer	1, 2, 3 or 4 bytes	generic

Easy to remember integer data types :

data type	width	signed/ unsigned	range
s8	8 bits (1 byte)	signed	-128 to +127
s16	16 bits (2 bytes)	signed	-32,768 to +32,767
s32	32 bits (4 bytes)	signed	-2,147,483,648 to +2,147,483,647
s64*	64 bits (8 bytes)	signed	−9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
u8	8 bits (1 byte)	unsigned	0 to +255
u16	16 bits (2 bytes)	unsigned	0 to +65,535
u32	32 bits (4 bytes)	unsigned	0 to +4,294,967,295
u64*	64 bits (8 bytes)	unsigned	0 to +18,446,744,073,709,551,615

Reference

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