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The C standard library or libc is the standard library for the C programming language, as specified in the ISO C standard. [ 1 ] Starting from the original ANSI C standard, it was developed at the same time as the C library POSIX specification, which is a superset of it. [ 2 ][ 3 ] Since ANSI C was adopted by the International Organization for ...
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.
errno.h is a header file in the standard library of the C programming ... The header file also defines macros that expand to integer constants that represent the ...
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.
C preprocessor. The C preprocessor is the macro preprocessor for several computer programming languages, such as C, Objective-C, C++, and a variety of Fortran languages. The preprocessor provides inclusion of header files, macro expansions, conditional compilation, and line control.
e. C alternative tokens refer to a set of alternative spellings of common operators in the C programming language. They are implemented as a group of macro constants in the C standard library in the iso646.h header. The tokens were created by Bjarne Stroustrup for the pre-standard C++ language [1] and were added to the C standard in a 1995 ...
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.
File input and output (I/O) is not part of the C language itself but instead is handled by libraries (such as the C standard library) and their associated header files (e.g. stdio.h). File handling is generally implemented through high-level I/O which works through streams. A stream is from this perspective a data flow that is independent of ...