sstream

C++ Standard Library
`fstream` `iomanip` `ios` `iostream` `sstream` `string`
Standard Template Library
`algorithm` `bitset` `functional` `iterator` Sequence containers Associative containers Unordered associative containers Container adaptors
C standard library
Data types Character classification Strings Mathematics File input/output Date/time Localization Memory allocation Process control Miscellaneous headers: `<assert.h>` `<errno.h>` `<iso646.h>` `<setjmp.h>` `<signal.h>` `<stdarg.h>`

In the C++ programming language, <sstream> is a part of the C++ Standard Library. It is a header file that provides templates and types that enable interoperation between stream buffers and string objects.^[1]^[2]

References

^ ISO/IEC 14882:2003 Programming Languages — C++. [lib.string.streams]/1
^ Stanley B. Lippman, Josee Lajoie (1999 - third edition). C++ Primer. Massachusetts: Addison-Wesley. pp. 1109–1112. ISBN 0-201-82470-1.