Programming instructions

Intermec Fingerprint v7.61 – Programmer’s Reference Manual Ed. 7276
Chapter 2 Program Instructions
WHILE...WEND
Field of Application Statement for executing a series of statements in a loop providing
a given condition is true.
Syntax WHILE <nexp>
<stmt>
[...<stmt>]
WEND
<nexp> is a numeric expression that is either TRUE (-1) of FALSE
(0).
<stmt> is a statement, or a list of statements on separate lines, that
will be executed provided <nexp> is TRUE.
Remarks
If <nexp> is TRUE, all following statements will be executed successively
until a WEND statement is encountered. The program execution then
goes back to the WHILE statement and repeats the process, provided
<nexp> still is TRUE.
If <nexp> is FALSE, the execution resumes at the statement following
the WEND statement.
WHILE...WEND statements can be nested. Each WEND matches the
most recent WHILE statement.
Example In this example, the WHILE...WEND loop will only be executed if the character
“Y” (ASCII 89 dec.) is entered on the keyboard of the host.
10 B%=0
20 WHILE B%<>89
30 INPUT "Want to exit? Press Y=Yes or N=No ",A$
40 B%=ASC(A$)
50 WEND
60 PRINT "The answer is Yes"
70 PRINT "You will exit the program"
80 END
RUN
yields:
Want to exit? Press Y=Yes or N=No N
Want to exit? Press Y=Yes or N=No Y
The answer is Yes
You will exit the program