DATE$, TIME$ in Loop Can Push System Time Backwards in DOS 3.x (25989)
The information in this article applies to:
- Microsoft QuickBASIC 3.0
- Microsoft QuickBASIC 4.0
- Microsoft QuickBASIC 4.0b
- Microsoft QuickBASIC 4.5
- Microsoft BASIC Compiler for MS-DOS and OS/2 6.0
- Microsoft BASIC Compiler for MS-DOS and OS/2 6.0b
This article was previously published under Q25989 SUMMARY
The following Basic program makes the system time go backwards when
run under MS-DOS Versions 3.x.
FOR i = 1 TO 40
DATE$ = "11/17/87"
PRINT TIME$
NEXT
This behavior is caused by a DOS Versions 3.x problem, not a Basic
problem. The problem does not occur in MS OS/2 real mode.
As a workaround, do not reset the date multiple times within a loop.
This information applies to Microsoft QuickBasic Versions 3.00, 4.00,
4.00b, and 4.50 and to Microsoft Basic Compiler Versions 6.00 and
6.00b when run under MS-DOS Versions 3.x.
| Modification Type: | Minor | Last Reviewed: | 1/8/2003 |
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| Keywords: | KB25989 |
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