The interface of C standard library is defined by the following collection of headers.

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 …

The C Standard Library is a set of C built-in functions, constants and header files like <stdio.h>, <stdlib.h>, <math.h>, etc. This library will work as a reference manual for C programmers.

17 April 2026: It took a while, but with a lot of help from the folks at isocpp.org, we're back! Sorry for the delay, and thank you for your patience.

Mar 25, 2026 · This section of the documentation contains reference content for the Microsoft implementation of the ISO standard C and C++ languages. The language reference includes …

Nov 2, 2025 · Support for multiple threads of execution. Types and functions for manipulating Unicode characters. This table also includes function-like macros.

Mar 21, 2026 · The C standard library is a standardized collection of header files and library routines used to implement common operations, such as input/output and character string handling.

Jan 17, 2026 · Linux relies heavily on open-source C standard libraries. Below are the most popular ones, along with where to find their source code. The GNU C Library (glibc) is the most widely used …

Many descendants still in use today (HP-UX, Solaris, AIX, *BSD, Mac OS X, Linux) POSIX: A standard where a bunch of UNIXy types got together and standardized their APIs Even Windows supports the …

Aug 6, 2025 · The Standard Function Library in C is a huge library of sub-libraries, each of which contains the code for several functions. In order to make use of these libraries, link each library in the …