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  2. C data types - Wikipedia

    en.wikipedia.org/wiki/C_data_types

    In the C programming language, ... (cstddef in C++). size_t is an unsigned integer type used to represent the ... ptrdiff_t is a signed integer type used to represent ...

  3. Signedness - Wikipedia

    en.wikipedia.org/wiki/Signedness

    The C programming language, along with its derivatives, implements a signedness for all integer data types, as well as for "character". For Integers, the unsigned modifier defines the type to be unsigned. The default integer signedness outside bit-fields is signed, but can be set explicitly with signed modifier.

  4. C syntax - Wikipedia

    en.wikipedia.org/wiki/C_syntax

    All C integer types have signed and unsigned variants. If signed or unsigned is not specified explicitly, in most circumstances, signed is assumed. However, for historic reasons, plain char is a type distinct from both signed char and unsigned char. It may be a signed type or an unsigned type, depending on the compiler and the character set (C ...

  5. Integer (computer science) - Wikipedia

    en.wikipedia.org/wiki/Integer_(computer_science)

    This type is not supported by compilers that require C code to be compliant with the previous C++ standard, C++03, because the long long type did not exist in C++03. For an ANSI/ISO compliant compiler, the minimum requirements for the specified ranges, that is, −(2 63 −1) [ 11 ] to 2 63 −1 for signed and 0 to 2 64 −1 for unsigned, [ 12 ...

  6. Primitive data type - Wikipedia

    en.wikipedia.org/wiki/Primitive_data_type

    The set of basic C data types is similar to Java's. Minimally, there are four types, char, int, float, and double, but the qualifiers short, long, signed, and unsigned mean that C contains numerous target-dependent integer and floating-point primitive types. [15]

  7. Signed number representations - Wikipedia

    en.wikipedia.org/wiki/Signed_number_representations

    This can also be thought of as the most significant bit representing the inverse of its value in an unsigned integer; in an 8-bit unsigned byte, the most significant bit represents the 128ths place, where in two's complement that bit would represent −128. In two's-complement, there is only one zero, represented as 00000000.

  8. Integer overflow - Wikipedia

    en.wikipedia.org/wiki/Integer_overflow

    Unsigned integer Signed integer Ada: modulo the type's modulus: raise Constraint_Error: C, C++: modulo power of two: undefined behavior C#: modulo power of 2 in unchecked context; System.OverflowException is raised in checked context [10] Java: modulo power of two (char is the only unsigned primitive type in Java) modulo power of two JavaScript

  9. Bitwise operations in C - Wikipedia

    en.wikipedia.org/wiki/Bitwise_operations_in_C

    In the C programming language, ... When performed on an unsigned type or a non-negative value in a signed type, ... when shifting a 32 bit unsigned integer, a shift ...