Standard C++ Library Changes
The Standard C++ Library encompasses the latest ANSI C++ extensions, including the Standard Template Library and a new iostream library. The Standard C++ Library provides new functionality, such as numerous algorithms that manipulate C++ objects, and a migration path for developers who want to move to the standard iostream.
Starting in Visual Studio .NET 2003, Visual C++ no longer ships the old iostream libraries.
The Standard C++ Library is a set of header files. A list of the header files can be found in the Standard C++ Library Overview. The new header files do not have the .h extension.
Additional upgrading issues are as follows: