Short how many bits

Note that char , signed char , and unsigned char are three distinct types for the purposes of mechanisms like overloading and templates. The int and unsigned int types have a size of four bytes.

However, portable code should not depend on the size of int because the language standard allows this to be implementation-specific.

For more information about the restrictions of the sizes of each type, see Built-in types. The range of enumerated types varies depending on the language context and specified compiler flags. For more information, see C Enumeration Declarations and Enumerations.

Keywords Built-in types. Integers are always represented in twos-complement form in the native byte-encoding order of your system. Integer types may be prefixed with the signed or unsigned qualifier. If no sign qualifier is present, the type is assumed to be signed. The D compiler also provides the type aliases listed in the following table:. These type aliases are equivalent to using the name of the corresponding base type in the previous table and are appropriately defined for each data model.

See Chapter 8, Type and Constant Definitions for information on how to define your own type aliases for use in your D programs. Note: as with all type specifiers, any order is permitted: unsigned long long int and long int unsigned long name the same type. The following table summarizes all available integer types and their properties in various common data models:. Note: integer arithmetic is defined differently for the signed and unsigned integer types.

See arithmetic operators , in particular integer overflows. Note: this allows the extreme case in which bytes are sized 64 bits, all types including char are 64 bits wide, and sizeof returns 1 for every type. The following three types and their cv-qualified versions are collectively called floating-point types. Floating-point types may support special values :.

Some operations on floating-point numbers are affected by and modify the state of the floating-point environment most notably, the rounding direction. Implicit conversions are defined between real floating types and integer types. Create account Log in. Namespaces Page Discussion. Views View Edit History. From cppreference. Keywords Escape sequences. Namespace declaration. Namespace aliases. Fundamental types Enumeration types Function types.

Compound types Union types. Default initialization Value initialization Zero initialization Copy initialization Direct initialization. Expressions Value categories Order of evaluation. Operators Operator precedence. Class declaration Constructors this pointer. Access specifiers friend specifier. Class template Function template.