STOP Statement

Halts execution of a DataBasic program and optionally displays a message from the system messages file.

Syntax

STOP {message-id {,parameter} ...}

Syntax elements

message-id The item-id of the item containing the message in the system message file (ERRMSG). If the specified item cannot be found, the item-id is displayed, followed by any parameters supplied.

parameter An expression that evaluates to a string to be included in the error message; each parameter replaces an A, A(n) or R(n) message format code in the error message item.

Comments

STOP functions in the same way as the ABORT statement, except that it will not terminate a driving Proc.

Example 1

    A=50; B=750; C=235; D=1300
    REVENUE = A+B; COST = C+D
    PROFIT = REVENUE - COST
    IF PROFIT > 1 THEN GOTO 100
    PRINT "ZERO PROFIT OR LOSS"
    STOP
100 PRINT "POSITIVE PROFIT"

If PROFIT is less than or equal to 1, ZERO PROFIT OR LOSS is printed and program execution stops; otherwise, POSITIVE PROFIT  is printed and the program continues.

Example 2

OPEN "INV" TO INV ELSE STOP "T11","INV"
.
.
ERR="T12"
FOR I=1 TO 10
  ITEM.ID = "A*":I
  READ ITEM FROM INV, ITEM.ID ELSE
    STOP ERR,ITEM.ID
    END
  WRITE ITEM ON TEST,I
NEXT I
END

In the following table, ◦ denotes a trailing space character.

Item T11 in ERRMSG file	Item T12 in ERRMSG file
L	L
E Could not find◦	H***
A	H Item◦
H file!	R(5)
L(2)	H does not exist!
H Check file definition!	L(2)
	D
	L(2)
	T

If INV does not exist, the following message is displayed:

[T11] Could not find INV file!
   Check file definition!

If item A*7 is not present, this message is displayed:

*** Item  A*7 does not exist!
12 Apr 1995
11:35:32