C/C ++ Data Type

The C language contains five basic data types:Void,Integer,Float,Double, AndChar.

Type	Description
Void	Null type
Int	Integer
Float	Floating Point Type
Double	Double Precision Floating Point Type
Char	Character Type

C ++ defines two other basic data types:BoolAndWchar_t.

Type	Description
Bool	Boolean Type; Value: true or false
Wchar_t	Wide character type

Type Modifier

some basic data types can be signed , unsigned , short , and long . when the type modifier is used separately, the default type is int . the following table lists all possible data types:

Bool

Char

Unsigned char

Signed Char

Int

Unsigned int

Signed int

Short int

Unsigned short int

Signed short int

Long int

Signed long int

Unsigned long int

Float

Double

Long double

Wchar_t

Type and value range

the size of the basic data type and the data range that can be expressed are related to the compiler and hardware platform. "cfloat" (or "float. H ") header files often define the maximum and minimum values of the data that can be expressed by the basic data type. you can also use sizeof to obtain the type size (number of bytes ). however, many platforms use standard data types, such. int and float usually occupy 32 bits, and char occupies 8 bits, double usually occupies 64 bits. bools is usually implemented in 8 bits.