Errno (Function)

Gets the error class during exception handling.

Errno

Parameters

None.

Return Value

Returns the value of the integer.

The content of the value is the Error No. that is fetched.

Description

Gets the Error No. when a Macro Error occurs.

The respective Macro Error error numbers are listed below.

Error No.
1	NEXT without FOR
2	Syntax error
3	RETURN without GOSUB
5	Illegal function call
6	Overflow
7	Out of memory
8	Undefined line number
9	Subscript out of range
11	Division by Zero
13	Type missmatch0
15	String too long
18	Undefined array
23	Line buffer overflow
26	FOR without NEXT
32	Undefined label
121	CASE without SELECT
122	END SELECT without SELECT
123	SELECT without END SELECT
124	CASE without END SELECT
125	ELSEIF without IF
126	ELSE without IF
127	ENDIF without IF
128	IF without ENDIF
129	ELSEIF without ENDIF
130	ELSE without ENDIF
135	DO without LOOP
136	LOOP without DO
140	EXIT without FOR
141	EXIT without DO

This is used between the catch - end try of try - catch - end try.

Example
Writing data to a file.

*DATAWRITE

    Try
        Open "/C0/DATA.DAT" for OUTPUT as #1
        Print #1, DATA$
        Close
    Catch

        ' In the case where the error is generated by the "open" command.

        If ERRCMND$ = "Open" Then
        print "Unable to open file"

        ' In the case where the error is generated by the "print" command.

        Elseif ERRCMND$ = "Print" Then
        Close
        print "Writing failed"
        Endif
    End try

Return