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  2. Environment variable - Wikipedia

    en.wikipedia.org/wiki/Environment_variable

    Windows 2000, NT 4.0 and NT 3.1 use "\WINNT". Windows NT 3.5 and NT 3.51 uses "\WINNT35". Windows NT 4.0 Terminal Server uses "\WTSRV". %windir% This variable points to the Windows directory. (On the Windows NT family of operating systems, it is identical to the %SystemRoot% variable). Windows 95–98 and Windows ME are, by default, installed ...

  3. C0 and C1 control codes - Wikipedia

    en.wikipedia.org/wiki/C0_and_C1_control_codes

    In 1973, ECMA-35 and ISO 2022 [18] attempted to define a method so an 8-bit "extended ASCII" code could be converted to a corresponding 7-bit code, and vice versa. [19] In a 7-bit environment, the Shift Out would change the meaning of the 96 bytes 0x20 through 0x7F [a] [21] (i.e. all but the C0 control codes), to be the characters that an 8-bit environment would print if it used the same code ...

  4. Naming convention (programming) - Wikipedia

    en.wikipedia.org/wiki/Naming_convention...

    One-character variable names should be avoided except for temporary "throwaway" variables. Common names for temporary variables are i, j, k, m, and n for integers; c, d, and e for characters. int i; char c; float myWidth; Constants Constants should be written in SCREAMING_SNAKE_CASE. Constant names may also contain digits if appropriate, but ...

  5. Name mangling - Wikipedia

    en.wikipedia.org/wiki/Name_mangling

    32-bit compilers emit, respectively: _f _g@4 @h@4 In the stdcall and fastcall mangling schemes, the function is encoded as _name@X and @name@X respectively, where X is the number of bytes, in decimal, of the argument(s) in the parameter list (including those passed in registers, for fastcall).

  6. const (computer programming) - Wikipedia

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

    For example, in C, int const x = 1; declares an object x of int const type – the const is part of the type, as if it were parsed "(int const) x" – while in Ada, X: constant INTEGER:= 1_ declares a constant (a kind of object) X of INTEGER type: the constant is part of the object, but not part of the type.

  7. Argument-dependent name lookup - Wikipedia

    en.wikipedia.org/wiki/Argument-dependent_name_lookup

    /* will print the provided char string as expected using ADL derived from the argument type std::cout */ operator << (std:: cout, "Hi there") /* calls a ostream member function of the operator<< taking a void const*, which will print the address of the provided char string instead of the content of the char string */ std:: cout. operator ...

  8. volatile (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Volatile_(computer...

    In C and C++, volatile is a type qualifier, like const, and is a part of a type (e.g. the type of a variable or field). The behavior of the volatile keyword in C and C++ is sometimes given in terms of suppressing optimizations of an optimizing compiler: 1- don't remove existing volatile reads and writes, 2- don't add new volatile reads and writes, and 3- don't reorder volatile reads and writes.

  9. C process control - Wikipedia

    en.wikipedia.org/wiki/C_process_control

    C process control refers to a group of functions in the standard library of the C programming language implementing basic process control operations. [1] [2] The process control operations include actions such as termination of the program with various levels of cleanup, running an external command interpreter or accessing the list of the environment operations.