Programming instructions

Intermec Fingerprint v7.61 – Programmer’s Reference Manual Ed. 7 117
Chapter 2 Program Instructions
IF...THEN...(ELSE)
Field of Application Statement for conditional execution controlled by the result of a
numeric expression.
Syntax IF<nexp>[,]THEN<stmt
1
>[ELSE<stmt
2
>]
IF<nexp>[,]THEN ↵
<stmt
1
> ↵
[...<stmt
1+n
>] ↵
[ELSE ↵
<stmt
2
> ↵
[...<stmt
2+n
>]] ↵
ENDIF ↵
<nexp> is a numeric expression, which is either true or false.
<stmt
1
> is the statement or list of statements telling the program what
to do, should the IF-condition be true.
<stmt
2
> is an optional statement or list of statements specifying what
will happen, should the IF-condition be false.
Remarks THEN and ELSE statements may be nested.
Multiple THEN and ELSE statements can alternatively be entered on
separate lines. If so, the instruction should be appended by ENDIF. See
second example below.
Examples These two examples illustrates the different syntaxes:
10 A%=100:B%=20
20 C$="A LARGER THAN B"
30 D$="A NOT LARGER THAN B"
40 IF A%>B% THEN PRINT C$ ELSE PRINT D$
RUN
yields:
A LARGER THAN B
10 A%=VAL(TIME$)
20 IF A%>120000 THEN
30 PRINT "TIME IS ";TIME$; ". ";
40 PRINT "GO TO LUNCH!"
50 ELSE
60 PRINT "CARRY ON - ";
70 PRINT "THERE’S MORE WORK TO DO!"
80 ENDIF
RUN
yields for example:
TIME IS 121500. GO TO LUNCH!