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<iostream> contains the definition of basic_iostream class template, which implements formatted input and output, and includes <ios>, <istream> and <ostream>. <fstream> contains the definitions of basic_ifstream, basic_ofstream and basic_fstream class templates which implement formatted input, output and input/output on file streams.
In other words, C++ does not have "submodules", meaning the . symbol which may be included in a module name bears no syntactic meaning and is used only to suggest the association of a module. As an example, std.compat is not a submodule of std , but is named so to indicate the association the module bears to the std module (as a "compatibility ...
Among these is the C++ iostream library, part of the ISO C++ standard. ISO C++ still requires the stdio functionality. Other alternatives include the Sfio [6] (A Safe/Fast I/O Library) library from AT&T Bell Laboratories. This library, introduced in 1991, aimed to avoid inconsistencies, unsafe practices and inefficiencies in the design of stdio.
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 include any file. Although relatively uncommon, it is sometimes used to include a body file such as a .c file. The include directive can support encapsulation and reuse ...
The C++ <iostream> standard header provides two variables associated with this stream: std::cerr and std::clog, the former being unbuffered and the latter using the same buffering mechanism as all other C++ streams.
In the C++ programming language, seekg is a function in the fstream library (part of the standard library) that allows you to seek to an arbitrary position in a file. This function is defined for ifstream class - for ofstream class there's a similar function seekp (this is to avoid conflicts in case of classes that derive both istream and ostream, such as iostream).
conio.h is a C header file used mostly by MS-DOS compilers to provide console input/output. [1] It is not part of the C standard library or ISO C, nor is it defined by POSIX. ...
Include next. GCC provides #include_next for chaining headers of the same name. [13] Import. Unlike C and C++, Objective-C includes an #import directive that is like #include but results in a file being included only once – eliminating the need for include guards and #pragma once.