29 Input/output library [input.output]

29.8 String-based streams [string.streams]

29.8.1 Header <sstream> synopsis [sstream.syn]

namespace std { template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>> class basic_stringbuf; template<class charT, class traits, class Allocator> void swap(basic_stringbuf<charT, traits, Allocator>& x, basic_stringbuf<charT, traits, Allocator>& y) noexcept(noexcept(x.swap(y))); using stringbuf = basic_stringbuf<char>; using wstringbuf = basic_stringbuf<wchar_t>; template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>> class basic_istringstream; template<class charT, class traits, class Allocator> void swap(basic_istringstream<charT, traits, Allocator>& x, basic_istringstream<charT, traits, Allocator>& y); using istringstream = basic_istringstream<char>; using wistringstream = basic_istringstream<wchar_t>; template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>> class basic_ostringstream; template<class charT, class traits, class Allocator> void swap(basic_ostringstream<charT, traits, Allocator>& x, basic_ostringstream<charT, traits, Allocator>& y); using ostringstream = basic_ostringstream<char>; using wostringstream = basic_ostringstream<wchar_t>; template<class charT, class traits = char_traits<charT>, class Allocator = allocator<charT>> class basic_stringstream; template<class charT, class traits, class Allocator> void swap(basic_stringstream<charT, traits, Allocator>& x, basic_stringstream<charT, traits, Allocator>& y); using stringstream = basic_stringstream<char>; using wstringstream = basic_stringstream<wchar_t>; }
The header <sstream> defines four class templates and eight types that associate stream buffers with objects of class basic_­string, as described in [string.classes].