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This article mainly explains "what are the basic IO types in C++". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what are the basic IO types in C++".

Introduction

C++ does not handle input and output directly, but handles IO through types in the standard library. The device of IO can be file, console, string. C++ mainly defines three IO types, which are included in the iostream, fstream and sstream header files.

To support languages that use wide characters, the standard library defines a set of types and objects that manipulate data of type wchar_t.

Here are the three IO library types and header files:

Iostream header file

Istream (wide character version of wistream), which reads data from the stream.

Ostream (wide character version of wostream), which writes data to the stream.

Iostream (wide character version wiostream), read and write stream.

Fstream header file

Ifstream (wide character version of wifstream), which reads data from a file.

Ofstream (wide character version of wofstream), which writes data to the file.

Fstream (wide character version of wfstream) to read and write files.

Sstream header file

Istringstream (wide character version of wistringstream), which reads data from string.

Ostringstream (wide character version of wostringstream), which writes data to string.

Stringstream (wide character version wstringstream), read and write string.

The device type and character size do not affect the IO operation we are going to perform. Thanks to the inheritance mechanism, all of the above types can be used > >, word) {/ / read successfully, and other operations. } output buffer

All output streams manage a buffer that holds the data read and written by the program.

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