UniBasic Commands Reference - Rocket Software

INPUTERR
Syntax
INPUTERR error.expr
Description
The UniBasic INPUTERR command displays an error message at the bottom line of
the terminal screen. error.expr can be any valid UniBasic statement, including a
literal string enclosed in quotation marks.
Tip: Use INPUTERR to prompt for errors when soliciting data with an INPUT
statement.
The next INPUT command erases previous error messages printed on the bottom line
of the screen. The UniBasic program must control the movement of the cursor so it
does not enter the bottom line.
Note: INPUTERR sends output to the screen regardless of PRINTER on/off status.
Example
In the following example, the program segment prints an error message at the bottom
of the screen if the input does not match the pattern mask:
1-391 UniBasic Commands Reference
PRINT @(-1)
PRINT @(5,5):'Hourly Wage'
LOOP
PRINT @(16,5)
INPUT HOURLY.WAGE
UNTIL HOURLY.WAGE MATCHES '1NON.2N'
INPUTERR 'Hourly wage must be entered as x.xx'
REPEAT
PRINT @(5,7):'Accepted.'
END