Introduction to the data types of C + +

The C language contains 5 basic data types: Void, integer, float, double, and Char.

Type	Describe
void	Empty type
Int	Integral type
Float	Floating-point types
Double	Double-precision floating-point type
Char	Character type

C + + defines two additional basic data types: BOOL and wchar_t.

Type	Describe
bool	Boolean type with a value of true or False
wchar_t	Wide character type

Type modifiers

Some basic data types can be modified by signed, unsigned, short, and long. When the type modifier is used alone, the default type is int. The following table is all the data types that can occur:

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 size and presentation range

The size of the base data type and the range of data that can be represented are related to the compiler and the hardware platform. The "Cfloat" (or "float.h") header file often defines the maximum and minimum values of the data that the base data type can represent. You can also use sizeof to get the size of the type (the number of bytes). However, many platforms use standard sizes for some data types, such as. int and float typically occupy 32 bits, char occupies 8 bits, and double usually occupies 64 bits. Bools are usually implemented in 8 bits.