Sinclair QL User Manual

•
and there are eight Internal pigeon holes Involved:
weekday$
EJ
length1
D
word$
~
length2
D
month$
IFEBRUARYI
length3
D
sum
G
average
D
Characters and Strings
•
If you think that IS a lot of fuss for a fairly simple problem you can certainly shorten it.
The shortest version would be a single line but It would be less easy to read. A reasonable
compromise uses the symbol
& which stands for the operation:
Join
two strings
Now type:
NEW
10 LET weekday$ ;;; "FIRST".II
20 LET word$ ;;; "OF".IIL
30 LET month$ = "FEBRUARY"""
40 LET phrase$ = weekday$ & word$ & month$ .. "
50 LET length = LEN(phrase$)."
60 PRINT length/3."
RUN"II
The output is 5 as before but there are some different internal effects:
weekday$
FIRST
length
G
•
word$
OF
month
FEBRUARY
phrase$
FIRSmFFEBRUARY
There is one more reasonable simplification which is to use READ and DATA Instead
of the first three LET statements.
Type:
NEW.II
10 READ weekday$, word$, month$ .. "
20 LET phrase$ = weekday$ & word$ & month$."
30 LET length = LEN(phrase$)."
40 PRINT length/3."
50 DATA "FIRST","OF","FEBRUARY""II
RUN"II
The internal effects of this version are exactly the same as those of the prevIous one.
READ causes the setting up of internal pigeon holes wilh values in them In a similar
way
to LET.
12/84
21

Sinclair QL Specifications

General

Processor	Motorola 68008
Clock Speed	7.5 MHz
RAM	128 KB (expandable to 640 KB)
ROM	48 KB
Operating System	Sinclair QDOS
Release Year	1984
Storage	Microdrive tape loop
Graphics	256x256 pixels, 8 colors
Ports	RS-232, ROM cartridge
Sound	Beeper (internal speaker)