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  2. Include directive - Wikipedia

    en.wikipedia.org/wiki/Include_directive

    The C standard library is declared as a collection of header files. The C++ standard library is similar, but the declarations may be provided by the compiler without reading an actual file. C standard header files are named with a .h file name extension, as in #include <stdio.h>. Typically, custom C header files have the same extension. Custom ...

  3. C++ Standard Library - Wikipedia

    en.wikipedia.org/wiki/C++_Standard_Library

    The C++ Standard Library also incorporates most headers of the ISO C standard library ending with ".h", but their use was deprecated (reverted the deprecation since C++23 [2]). [3] C++23 instead considers these headers as useful for interoperability with C , and recommends against their usage outside of programs that are intended to be both ...

  4. C standard library - Wikipedia

    en.wikipedia.org/wiki/C_standard_library

    The application programming interface (API) of the C standard library is declared in a number of header files. Each header file contains one or more function declarations, data type definitions, and macros. After a long period of stability, three new header files (iso646.h, wchar.h, and wctype.h) were added with Normative Addendum 1 (NA1), an ...

  5. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Single file NIfTI format, used extensively in biomedical imaging. 6E 69 31 00: ni1: 344 hdr Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging. 52 41 46 36 34: RAF64: 0 Report Builder file from Digital Metaphors: 56 49 53 33: VIS3: 0 Resource file Visionaire 3.x Engine: 4D 53 48 7C 42 53 48 7C: MSH| BSH| 0 hl7

  6. 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. C++ provides this functionality in the header cstdarg.

  7. errno.h - Wikipedia

    en.wikipedia.org/wiki/Errno.h

    Download as PDF; Printable version; ... errno.h is a header file in the standard library of the C ... C++11 additionally defines many of the same values found within ...

  8. unistd.h - Wikipedia

    en.wikipedia.org/wiki/Unistd.h

    In the C and C++ programming languages, unistd.h is the name of the header file that provides access to the POSIX operating system API. [1] It is defined by the POSIX.1 standard, the base of the Single Unix Specification, and should therefore be available in any POSIX-compliant operating system and compiler.

  9. utility (C++) - Wikipedia

    en.wikipedia.org/wiki/Utility_(C++)

    utility is a header file in the C++ Standard Library.This file has two key components: rel_ops, a namespace containing set of templates which define default behavior for the relational operators!=, >, <=, and >= between objects of the same type, based on user-defined operators == and <.