ERROR

Syntax

ERROR <integer expression>

Versions: Extended, Disk

Purpose

1) To simulate the occurrence of a BASIC-80 error or 2) to allow error codes to be defined by the user.

Remarks

The ERROR statement simulates an error condition, triggering error handling as if a real error occurred.

Parameters:

• integer expression - The error code to simulate (1-255)

Standard Error Codes:

• Codes 1-255 are predefined BASIC error codes
• The error will trigger ON ERROR GOTO if active
• ERR variable will contain the error code
• ERL variable will contain the line number where ERROR was executed

Custom Error Codes:

You can use ERROR with custom codes (typically > 200) to implement your own error handling for application-specific conditions.

Example:

10 ON ERROR GOTO 1000
20 IF X < 0 THEN ERROR 200  ' Custom error
30 PRINT SQR(X)
...
1000 IF ERR = 200 THEN PRINT "Negative number not allowed"
1010 RESUME NEXT

See Also

• ON ERROR GOTO - To enable error trapping and specify the first line of the error handling subroutine
• RESUME - Continue program execution after error recovery
• ERR - Error code variable
• ERL - Error line number variable