String Streams

Streams

A stream is an infinite data stream on which you can push or pull data. String streams and file streams enable strings and files to interact with the stream directly.

String Streams

String streams need the header <sstream>. They are not connected to an input or output stream and store their data in a string.

Whether you use a string stream for input or output or with the character type char or wchar_t there are various string stream classes:

Class	Use
std::istringstream and std::wistringstream	String stream for the input of data of type char and wchar_t.
std::ostringstream and std::wostringstream	String stream for the output of data of type char and wchar_t.
std::stringstream and std::wstringstream	String stream for the input or output of data of type char and wchar_t

Typical operations on a string stream are:

• Write data in a string stream: