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  2. C file input/output - Wikipedia

    en.wikipedia.org/wiki/C_file_input/output

    The C programming language provides many standard library functions for file input and output.These functions make up the bulk of the C standard library header <stdio.h>. [1] The functionality descends from a "portable I/O package" written by Mike Lesk at Bell Labs in the early 1970s, [2] and officially became part of the Unix operating system in Version 7.

  3. C standard library - Wikipedia

    en.wikipedia.org/wiki/C_standard_library

    The C standard library, sometimes referred to as libc, [1] is the standard library for the C programming language, as specified in the ISO C standard. [2] Starting from the original ANSI C standard, it was developed at the same time as the C POSIX library, which is a superset of it. [3]

  4. C string handling - Wikipedia

    en.wikipedia.org/wiki/C_string_handling

    Most of the functions that operate on C strings are declared in the string.h header (cstring in C++), while functions that operate on C wide strings are declared in the wchar.h header (cwchar in C++). These headers also contain declarations of functions used for handling memory buffers; the name is thus something of a misnomer.

  5. C preprocessor - Wikipedia

    en.wikipedia.org/wiki/C_preprocessor

    In this case, the file name is enclosed in angle brackets to denote that it is a system file. For a file in the codebase being built, double-quotes are used instead. The preprocessor may use a different search algorithm to find the file based on this distinction. For C, a header file is usually named with a .h extension.

  6. External variable - Wikipedia

    en.wikipedia.org/wiki/External_variable

    If the program is in several source files, and a variable is defined in file1 and used in file2 and file3, then extern declarations are needed in file2 and file3 to connect the occurrences of the variable. The usual practice is to collect extern declarations of variables and functions in a separate file, historically called a header, that is ...

  7. Direct.h - Wikipedia

    en.wikipedia.org/wiki/Direct.h

    direct.h is a C/C++ header file provided by Microsoft Windows, which contains functions for manipulating file system directories. Some POSIX functions that do similar things are in unistd.h . Member functions

  8. C POSIX library - Wikipedia

    en.wikipedia.org/wiki/C_POSIX_library

    The C POSIX library is a specification of a C standard library for POSIX systems. It was developed at the same time as the ANSI C standard. Some effort was made to make POSIX compatible with standard C; POSIX includes additional functions to those introduced in standard C. On the other hand, the 5 headers that were added to the C standard ...

  9. Category:C (programming language) headers - Wikipedia

    en.wikipedia.org/wiki/Category:C_(programming...

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