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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. stdarg.h - Wikipedia

    en.wikipedia.org/wiki/Stdarg.h

    stdarg.h is a header in the C standard library of the C programming language that allows functions to accept an indefinite number of arguments. [1] It provides facilities for stepping through a list of function arguments of unknown number and type.

  4. Undefined behavior - Wikipedia

    en.wikipedia.org/wiki/Undefined_behavior

    For example, if the type of a variable as specified in the source code is narrower than the native register width (such as int on a 64-bit machine, a common scenario), then the compiler can safely use a signed 64-bit integer for the variable in the machine code it produces, without changing the defined behavior of the code. If a program ...

  5. Integer literal - Wikipedia

    en.wikipedia.org/wiki/Integer_literal

    In computer science, an integer literal is a kind of literal for an integer whose value is directly represented in source code.For example, in the assignment statement x = 1, the string 1 is an integer literal indicating the value 1, while in the statement x = 0x10 the string 0x10 is an integer literal indicating the value 16, which is represented by 10 in hexadecimal (indicated by the 0x prefix).

  6. Primitive data type - Wikipedia

    en.wikipedia.org/wiki/Primitive_data_type

    For example, early versions of the C programming language that followed ANSI C and its former standards did not have a dedicated Boolean type. Instead, numeric values of zero are interpreted as false, and any other value is interpreted as true. [9]

  7. Sigil (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Sigil_(computer_programming)

    For example, 0x10ULL evaluates to the value 16 as an unsigned long long integer in C++: the 0x prefix indicates hexadecimal, while the suffix ULL indicates unsigned long long. Similarly, prefixes are often used to indicate a raw string , such as r"C:\Windows" in Python, which represents the string with value C:\Windows ; as an escaped string ...

  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. Integer (computer science) - Wikipedia

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

    Integral types may be unsigned (capable of representing only non-negative integers) or signed (capable of representing negative integers as well). [1] An integer value is typically specified in the source code of a program as a sequence of digits optionally prefixed with + or −. Some programming languages allow other notations, such as ...