Programming instructions

Intermec Fingerprint 6.13 – Programmer's Guide

7. INPUT TO FINGERPRINT, cont'd.

5. Input from a Random

File, cont'd.

Now you can use the variables assigned to the fields in the record

by means of the FIELD statement to handle the data. Possible

numeric expressions converted to string format before being put

into the record can now be converted back to numeric format using

VAL functions. In our example, we will simply print the data on the

screen:

40 PRINT F1$,F2$,F3$

Finally, close the file and execute:

50 CLOSE #1

RUN

Yields:

ABC DEF 123456

Two instructions facilitate the use of random files:

LOC (Location)

The LOC function returns the number of the last record read by the

use of GET statement.

This example closes the file "ADDRESSES" when record No. 100

has been read from the file:

10 OPEN "ADDRESSES" AS #1

.....

200 IF LOC(1)=100 THEN CLOSE #1

.....

LOF (Length-of-File)

The LOF function returns the length in bytes of an OPENed file.

The example illustrates how the length of the file "Pricelist" is

returned:

10 OPEN "PRICELIST" AS #5

20 PRINT LOF(5)

. . . .

☞

VAL function

Also see:

• Chapter 9.2