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The C programming language has a set of functions implementing operations on strings (character strings and byte strings) in its standard library.Various operations, such as copying, concatenation, tokenization and searching are supported.
C character classification is a group of operations in the C standard library that test a character for membership in a particular class of characters; such as alphabetic, control, etc. Both single-byte, and wide characters are supported.
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]
This is an accepted version of this page This is the latest accepted revision, reviewed on 4 January 2025. General-purpose programming language "C programming language" redirects here. For the book, see The C Programming Language. Not to be confused with C++ or C#. C Logotype used on the cover of the first edition of The C Programming Language Paradigm Multi-paradigm: imperative (procedural ...
C. C character classification; C date and time functions; C dynamic memory allocation; C file input/output; C localization functions; C mathematical functions; C process control; C signal handling; C data types; Crt0
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.
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printf is a C function belonging to the ANSI C standard library, and included in the file stdio.h.Its purpose is to print formatted text to the standard output stream.Hence the "f" in the name stands for "formatted".