Microsoft KB Archive/37029
Article ID: 37029
Article Last Modified on 11/21/2006
- Microsoft QuickBasic 4.0
- Microsoft QuickBASIC 4.0b
- Microsoft QuickBasic 4.5 for MS-DOS
- Microsoft BASIC Compiler 6.0
- Microsoft BASIC Compiler 6.0b
- Microsoft BASIC Professional Development System 7.0
This article was previously published under Q37029
The length of a fixed-length character string variable must be specified as a integer constant or as a CONST integer constant. The run-time error "Invalid Constant" results if the number in a "STRING * number" clause of a DIM or REDIM statement is a variable, or a constant of a non-integer type.
The length of a fixed-length string must not be negative. A fixed-length string must have a length of at least one.
This information applies to Microsoft QuickBasic Versions 4.00, 4.00b, and 4.50, to Microsoft Basic Compiler Versions 6.00 and 6.00b for MS-DOS and MS OS/2, and to Microsoft Basic PDS Version 7.00 for MS-DOS and MS OS/2.
QuickBasic versions earlier than Version 4.00 do not support fixed-length string variables.
The following is a code example:
'This program will correctly give "Invalid Constant" when x is replaced 'by y or z in the DIM statement. DEFINT A-Z CONST x = 11 CONST y = 11.0 z = 11 DIM a AS STRING * x a = "hello there" PRINT a END
Additional query words: QuickBas BasicCom