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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

Run-Time Library Reference 

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.

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