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  2. C string handling - Wikipedia

    en.wikipedia.org/wiki/C_string_handling

    Strings are passed to functions by passing a pointer to the first code unit. Since char * and wchar_t * are different types, the functions that process wide strings are different than the ones processing normal strings and have different names. String literals ("text" in the C source code) are converted to arrays during compilation. [2]

  3. Variadic macro in the C preprocessor - Wikipedia

    en.wikipedia.org/wiki/Variadic_macro_in_the_C...

    A variadic macro is a feature of some computer programming languages, especially the C preprocessor, whereby a macro may be declared to accept a varying number of arguments. Variable-argument macros were introduced in 1999 in the ISO/IEC 9899:1999 ( C99 ) revision of the C language standard, and in 2011 in ISO/IEC 14882:2011 ( C++11 ) revision ...

  4. Macro (computer science) - Wikipedia

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

    As a simple example, in the C programming language, this is a typical macro that is not a parameterized macro, i.e., a parameterless macro: #define PI 3.14159 This causes PI to always be replaced with 3.14159 wherever it occurs. An example of a parameterized macro, on the other hand, is this: #define pred(x) ((x)-1)

  5. C preprocessor - Wikipedia

    en.wikipedia.org/wiki/C_preprocessor

    For example, given int i = 1; j = 2;, the result of max(i,j) is 2. If a and b were only evaluated once, the result of max(i++,j++) would be the same, but with double evaluation the result is 3. Hidden order of operation. Failure to bracket arguments can lead to unexpected results. For example, a macro to double a value might be written as:

  6. windows.h - Wikipedia

    en.wikipedia.org/wiki/Windows.h

    windows.h is a source code header file that Microsoft provides for the development of programs that access the Windows API (WinAPI) via C language syntax. It declares the WinAPI functions, associated data types and common macros. Access to WinAPI can be enabled for a C or C++ program by including it into a source file: #include <windows.h>

  7. TRAC (programming language) - Wikipedia

    en.wikipedia.org/wiki/TRAC_(programming_language)

    It has explicit input and output operators, unlike the typical implicit I/O at the outermost macro level, which makes it simultaneously simpler and more versatile [vague] than older macro languages. TRAC is a text-processing language, [5] also called a string processing language. [6] Because of this the only data type available is a string of ...

  8. stdarg.h - Wikipedia

    en.wikipedia.org/wiki/Stdarg.h

    In C23 the second argument is optional and will not be evaluated. [2] After this, each invocation of the va_arg macro yields the next argument. The first argument to va_arg is the va_list and the second is the type of the next argument passed to the function. As the last step, the va_end macro must be called on the va_list before the function ...

  9. assert.h - Wikipedia

    en.wikipedia.org/wiki/Assert.h

    assert.h is a header file in the C standard library. It defines the C preprocessor macro assert and implements runtime assertion in C. assert.h is defined in ANSI C as part of the C standard library. In the C++ programming language, assert.h and < cassert > are available; both are functionally equivalent. [1]