DATA TYPES AND THEIR RANGE

                                                                                                     2^(X-1)  to  2^(x-1)-1

TYPE	LENGTH	RANGE
Unsigned char	8 bits-> 1 byte	0 to 255
char	8 bits-> 1 byte	-128 to 127
enum	16 bits->2 byte	-32,768 to 32,767
Unsigned int	16 bits-> 2byte	0 to 65,535
Short int	16 bits-> 2 byte	-32,768 to 32,767
int	16 bits-> 2 byte	-32,768 to 32,767
Unsigned long	32 bits->4 byte	0 to 4,294,967,295
long	32 bits->4 byte	-2,147,483,648 to 2,147,483,647
float	32 bits-> 4 byte	3.4*(10**-38) to 3.4*(10**+38)
double	64 bits-> 8 byte	1.7*(10**-308) to 1.7*(10**+308)
Long double	80 bits-> 10 byte	3.4*(10**-4932) to 1.1*(10**+4932)

                                                                                       x->bits