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The C preprocessor (used with C, C++ and in other contexts) defines an include directive as a line that starts #include and is followed by a file specification. COBOL defines an include directive indicated by copy in order to include a copybook. Generally, for C/C++ the include directive is used to include a header file, but can
an input/output stream that wraps a file stream buffer. Provides functions to open or close a file in addition to those of generic input/output stream fstream – operates on characters of type char; wfstream – operates on characters of type wchar_t; basic_stringstream: an input/output stream that wraps a string stream buffer.
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.
The C library provides a basic set of mathematical functions, string manipulation, type conversions, and file and console-based I/O. It does not include a standard set of " container types " like the C++ Standard Template Library , let alone the complete graphical user interface (GUI) toolkits, networking tools, and profusion of other ...
The C++ Standard Library provides several generic containers, functions to use and manipulate these containers, function objects, generic strings and streams (including interactive and file I/O), support for some language features, and functions for common tasks such as finding the square root of a number.
Objective-C preprocessors have #import, which is like #include but only includes the file once. A common vendor pragma with a similar functionality in C is #pragma once. C++ as of C++20 has the import and module directives for modules.
If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1270 ahead. Let's start with a few hints.
The std::string class is the standard representation for a text string since C++98. The class provides some typical string operations like comparison, concatenation, find and replace, and a function for obtaining substrings. An std::string can be constructed from a C-style string, and a C-style string can also be obtained from one. [7]