The Microsoft run-time library provides routines for programming for the Microsoft Windows operating system. These routines automate many common programming tasks that are not provided by the C and C++ languages.
Sample programs are included in the individual reference topics for most routines in the library.
In This Section
- C Run-Time Libraries 
 Discusses the .lib files that comprise the C run-time libraries.
- Run-Time Routines by Category 
 Provides links to the run-time library by category.
- Global Variables and Standard Types 
 Provides links to the global variables and standard types provided by the run-time library.
- Global Constants 
 Provides links to the global constants defined by the run-time library.
- Alphabetical Function Reference 
 Provides a table of contents entry point into an alphabetical listing of all C run-time library functions.
- Generic-Text Mappings 
 Provides links to the generic-text mappings defined in Tchar.h.
- Language and Country/Region Strings 
 Describes how to use the setlocale function to set the language and Country/Region strings.
Related Sections
- Debug Routines 
 Provides links to the debug versions of the run-time library routines.
- Run-Time Error Checking 
 Provides links to functions that support run-time error checks.
- Run-Time Library Behavior 
 Discusses the entry point into the CRT DLL.
- Visual C++ Libraries 
 Provides links to the various libraries provided with Visual C++, including ATL, MFC, OLE DB Templates, the C run-time library, and the Standard C++ Library.
- Debugging 
 Provides links to using the Visual Studio debugger to correct logic errors in your application or stored procedures.