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  2. C data types - Wikipedia

    en.wikipedia.org/wiki/C_data_types

    UCHAR_MAX, USHRT_MAX, UINT_MAX, ULONG_MAX, ULLONG_MAX(C99) – maximum possible value of unsigned integer types: unsigned char, unsigned short, unsigned int, unsigned long, unsigned long long; CHAR_MIN – minimum possible value of char; CHAR_MAX – maximum possible value of char; MB_LEN_MAX – maximum number of bytes in a multibyte character

  3. Integer (computer science) - Wikipedia

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

    In computer science, an integer is a datum of integral data type, a data type that represents some range of mathematical integers. Integral data types may be of different sizes and may or may not be allowed to contain negative values. Integers are commonly represented in a computer as a group of binary digits (bits). The size of the grouping ...

  4. Signedness - Wikipedia

    en.wikipedia.org/wiki/Signedness

    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. By contrast, the C standard declares signed char, unsigned char, and char, to be three distinct types, but specifies that all three must have the same size and alignment.

  5. Bit-length - Wikipedia

    en.wikipedia.org/wiki/Bit-length

    Bit length or bit width is the number of binary digits, called bits, necessary to represent an unsigned integer [1] as a binary number. Formally, the bit length of a natural number n ≥ 0 {\displaystyle n\geq 0} is

  6. sizeof - Wikipedia

    en.wikipedia.org/wiki/Sizeof

    sizeof is a unary operator in the programming languages C and C++.It generates the storage size of an expression or a data type, measured in the number of char-sized units.. Consequently, the construct sizeof (char) is guaranteed to be

  7. Primitive data type - Wikipedia

    en.wikipedia.org/wiki/Primitive_data_type

    Integer addition, for example, can be performed as a single machine instruction, and some offer specific instructions to process sequences of characters with a single instruction. [7] But the choice of primitive data type may affect performance, for example it is faster using SIMD operations and data types to operate on an array of floats.

  8. C syntax - Wikipedia

    en.wikipedia.org/wiki/C_syntax

    A snippet of C code which prints "Hello, World!". The syntax of the C programming language is the set of rules governing writing of software in C. It is designed to allow for programs that are extremely terse, have a close relationship with the resulting object code, and yet provide relatively high-level data abstraction.

  9. Data type - Wikipedia

    en.wikipedia.org/wiki/Data_type

    Almost all programming languages supply one or more integer data types. They may either supply a small number of predefined subtypes restricted to certain ranges (such as short and long and their corresponding unsigned variants in C/C++); or allow users to freely define subranges such as 1..12 (e.g. Pascal/Ada). If a corresponding native type ...