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Q28244: INFO: qsort() Can Sort Data Structures Based on Multiple Fields

Article: Q28244
Product(s): Microsoft C Compiler
Version(s): 1.0,1.5,2.0,4.0,5.0,6.0
Operating System(s): 
Keyword(s): kbCRT kbVC kbVC100 kbVC150 kbVC200 kbVC400 kbVC500 kbVC600
Last Modified: 29-JAN-2002

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The information in this article applies to:

- The C Run-Time (CRT), included with:
   - Microsoft C for MS-DOS 
   - Microsoft C for OS/2 
   - Microsoft C/C++ for MS-DOS 
   - Microsoft Visual C++ for Windows, 16-bit edition, versions 1.0, 1.5 
   - Microsoft Visual C++, 32-bit Editions, versions 1.0, 2.0, 4.0, 5.0, 6.0 
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SUMMARY
=======

The qsort() function in the Microsoft C run-time library does not restrict the
methods an application can use to compare items. When qsort() compares two data
elements, it calls an application-supplied comparison routine.

To sort an array of structures using more than one field as a key, create a
comparison function that relates the appropriate fields in each structure and
returns a comparison value to indicate the result.

Additional query words:

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Keywords          : kbCRT kbVC kbVC100 kbVC150 kbVC200 kbVC400 kbVC500 kbVC600 
Technology        : kbVCsearch kbAudDeveloper kbCRT
Version           : :1.0,1.5,2.0,4.0,5.0,6.0
Issue type        : kbinfo

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