How to Obtain Upper and Lower Bytes of an Integer

ID: Q27097

The information in this article applies to:

• The Standard and Professional Editions of Microsoft Visual Basic for MS-DOS, version 1.0
• Microsoft QuickBasic for MS-DOS, versions 4.0, 4.0b, and 4.1
• Microsoft Basic Compiler for MS-DOS and MS OS/2, versions 6.0 and 6.0b
• Microsoft Basic Professional Development System (PDS) for MS-DOS and MS OS/2, version 7.0

SUMMARY

The program listed below demonstrates how to obtain the upper and lower bytes of an integer. The following is sample code:

Example

' To try this example in VBDOS.EXE:
' 1. From the File menu, choose New Project.
' 2. Copy the code example to the Code window.
' 3. Press F5 to run the program.

ah% = (a% AND &HFF00) \ 256 AND &HFF   ' Note: "\" means integer

PRINT HEX$(ah%)                 ' Prints high bytes: A0
PRINT HEX$(al%)                 ' Prints low bytes: B0