Q42321: Syntax Error, Duplicate Definition, Expected:Variable=Express

Article: Q42321
Product(s): See article
Version(s): 4.00 4.00b 4.50
Operating System(s): MS-DOS
Keyword(s): ENDUSER | SR# S890209-84 B_BasicCom | mspl13_basic
Last Modified: 12-DEC-1989

The sample code below shows three very closely related pairs of BASIC
code. Each example produces a different error, as shown.

This information applies to the QB.EXE environment supplied with
QuickBASIC Versions 4.00, 4.00b, and 4.50, Microsoft BASIC Compiler
Versions 6.00 and 6.00b for MS-DOS, and the QBX.EXE environment
supplied with Microsoft BASIC PDS Version 7.00 for MS-DOS.

Under QuickBASIC Version 3.00, all three code segments produce the
error message "MISSING =".

The following are code examples:

' PROG #1
     bd% = 6
     bd% - 13 = c   ' "Expected: variable= expression"

' PROG #2
     bd% = 6        ' "Duplicate Definition"
     bd - 13 = c

' PROG #3
     x% = 6
     bd - 13 = c    ' "Syntax error"

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