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https://github.com/QB64-Phoenix-Edition/QB64pe.git
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6e01fc8dce
Added new _STRCMP and _STRICMP commands for quick string comparisons. Cleaned up QB64 to finish removing the QUI (quick user insert) code and folders. Altered UCASE and LCASE routines to be faster in some situations for us.
42 lines
1.1 KiB
Plaintext
42 lines
1.1 KiB
Plaintext
'''ERR''' function returns the last Qbasic error code number.
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{{PageSyntax}}
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:: errornum% = ERR
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* If there is no error it returns 0
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* Can be used in an error handling routine to report the error number.
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''Example:'' Simulating an error to test a program error handler that looks for a "Subscript out of range" error.
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{{CodeStart}} '' ''
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{{Cl|ON ERROR}} {{Cl|GOTO}} handler
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{{Cl|IF...THEN|IF}} x = 0 {{Cl|THEN}} {{Cl|ERROR}} 111 'simulate an error code that does not exist
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x = x + 1
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{{Cl|IF...THEN|IF}} x {{Cl|THEN}} {{Cl|ERROR}} 9 'simulate array boundary being exceeded
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{{Cl|END}}
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handler:
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{{Cl|PRINT}} {{Cl|ERR}}, {{Cl|_ERRORLINE}}
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{{Cl|BEEP}}
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{{Cl|IF...THEN|IF}} {{Cl|ERR}} = 9 {{Cl|THEN}}
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{{Cl|PRINT}} "The program has encountered an error and needs to close! Press a key!"
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K$ = {{Cl|INPUT$}}(1)
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{{Cl|SYSTEM}}
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{{Cl|END IF}}
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{{Cl|RESUME}} {{Cl|NEXT}} 'RESUME can only be used in error handlers '' ''
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{{CodeEnd}}
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''See also:''
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* [[ON ERROR]], [[RESUME]]
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* [[ERL]], [[_ERRORLINE]]
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* [[ERROR]]
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* [[ERROR Codes]]
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{{PageNavigation}} |