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50 lines
1.8 KiB
Plaintext
50 lines
1.8 KiB
Plaintext
'''This page is maintained for historic purposes. The keyword is not supported in QB64. Reading the current date is supported with the [[DATE$|DATE$ function]].'''
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----
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The [[DATE$]] statement sets the current computer date to another [[STRING]] value.
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{{PageSyntax}}
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: [[DATE$]] = {{Parameter|stringExpression$}}
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* {{Parameter|stringExpression$}} can use slash or dash as separators:
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::::mm-dd-yyyy
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::::mm/dd/yyyy
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* String expression or variable must contain the month, day and 4 digit year to be changed (10 valid characters).
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* If value is not a valid formatted string, a "Type Mismatch" error results. The previous DATE$ value will be retained.
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* The current date (as assigned when the operating system was initialized) can be saved to restore later with the [[DATE$]] function.
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*The DATE$ function returns a 10-character string in the form ''mm-dd-yyyy''. ''mm'' is the month (01 to 12), ''dd'' is the day (01 to 31), and ''yyyy'' is the four digit year.
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* '''Note: Some systems may not allow the DATE to be reset or require Administrator privileges.''' Try a batch file or [[SHELL]].
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{{PageExamples}}
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''Example:'' Backdating computer to run old software.
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{{CodeStart}}
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today$ = {{Cl|DATE$}} ' function saves current computer date value
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PRINT today$ ' verify actual date
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{{Cl|DATE$ (statement)|DATE$}} = "12-25-2000" ' literal statement changes date
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PRINT {{Cl|DATE$}} ' verify new date setting
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{{Cl|SHELL}} "CMD /C " + programfile$ 'run old program
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K$ = {{Cl|INPUT$}}(1) ' press a key
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DATE$ = today$ ' statement resets computer to original date later in program
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PRINT {{Cl|DATE$}} ' verify present setting
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{{CodeEnd}}
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{{OutputStart}}
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09-01-2009
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12-25-2000
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09-01-2009
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{{OutputEnd}}
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{{PageSeeAlso}}
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[[DATE$]], [[TIME$]], [[TIME$ (statement)]]
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{{PageNavigation}}
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