C + + basic variable types

Table of arithmetic types

Type	Meaning	Minimum storage space	Range of values
bool	Boolean type	–
Char	Character type	8 Guests	-2^7 ~ 2^7-1
wchar_t	Wide character type	16 Guests
Short	Short-integer	16 Guests	-2^15 ~ 2^15-1
Int	Integral type	16 Guests	-2^31 ~ 2^31-1
Long	Long integer type	32 Guests	-2^31 ~ 2^31-1
Float	Single-precision floating-point number	6-digit valid digits	+/-3.40282e+038
Double	Double-precision floating-point number	10-digit valid digits	+/-1.79769e+308
Long double	Extended double precision floating point number	10-digit valid digits	+/-1.79769e+308

Integer type: short, int, long:

The short type represents a half-machine word (word) long, the int type represents a machine-length, and a long type is one or two machine words (in a 32-bit machine, the int type and long type are usually the same word length).

C + + basic variable types