C Programming Language

Data Types

Type	Keyword	Bytes	Range
Character	char	1	-128 to 128
Short integer	short	2	-32767 to 3276
Integer	int	4	-2,147,483,647 - 2,147,483,647
Long Integer	long	4	-2,147,483,647 - 2,147,483,647
Long Long Integer	long long	8	-9,223,372,036,854,775,807 - -9,223,372,036,854,775,807
Unsigned character	unsigned char	1	0 to 255
Unsigned short integer	unsigned short	2	0 to 65525
Unsigned integer	unsigned int	4	0 to 4,294,967,295
Unsigned long integer	unsigned long	4	0 to 4,294,967,295
Unsigned long long integer	unsigned long long	8	0 to 18,446,744,073,709,551,615
Single-precision floating-point	float	4	1.2E-38 to 3.4E38¹
Double-precision floating-point	double	8	2.2E-308 to 1.8E308²

#define PI 3.14159

const int count = 100;