The std::
namespace in C++.
In the C++ programming language, the C++ Standard Library is a collection of classes and functions, which are written in the core language and part of the C++ ISO Standard itself.
The C++ standard library provides a wide range of facilities that are usable in standard C++.
Bibliography
References
“C++ Standard Library.” 2023. Wikipedia, February. https://en.wikipedia.org/w/index.php?title=C%2B%2B_Standard_Library&oldid=1139687970.
“C++ Standard Library.” n.d. Accessed May 18, 2023. https://en.cppreference.com/w/cpp/standard_library.