Program Comm^List
Classificathin
INPUT INPUT variable string
C a u s e s d a t a t o b e e n t e r e d f r o m
the keyboard during execution of
a program. The program execu
tion i s stopped until after the end
of input. P.44
KEY
Chara c t e r v a r i able = K E Y
Reads a character entered during
execution of a program artd as
signs it to a character variable.
Since the program is not stopped
b y t h i s c o m m a n d , n o t h i n g i s
assigned to the character variable
if no key entry is made. P.45
PRINT
PRINT output control
function 11J
output element |' ■ •
Output s the desi gnated outpu t
element.
P. 4 5
CSR
CSR /I j;}
(0 ^ ^ 11)
Displays from the designated nth
position.
P. 4 6
GOTO
0/-VT/-. / line number ]
i variable /
Causes control to jump to the
designated line number. P.47
if-ITHENI
» '
IF comparison expression
1 T H E N li n e nu m b e r \
\ ; c o m m a n d J
Causes control to jump to the line
number following THEN, or exe
c ut e s t h e c o m ma n d f o l l o wi n g
" ;". if the result of the compari
s o n i s t r u e .
Causes control to proceed to the
n e x t l i n e n u m b e r i f t h e r e s u l t o f
th e c om pa ri so n i s f al se . P.4 8
GOSUB GOSUB 1
1 v a r i a b l e /
C a l l s o u t t h e s u b r o u t i n e o f t h e
de s i gna t e d l ine nu m b er fo r e x e cu
t i o n . A f t e r t h e s u b r o u t i n e i s e x e
c u t e d , c o n t r o l r e t u r n s t o t h e
GOSUB sta temen t by the RE
TURN statement to proceed to
the command following that
statement. P.51^OYfclcil.lb 3f)l
' r t v fl t i
RETURN RETURN
Signifies the end of a subroutine;
r e t u r n s c o n t r o l t o a l i n e n u m b e r
ne x t t o t he G O S UB st a te m e nt .
P. 5 1
i ' v i f u l j U t s \ r i \
,i
•.Weiii}« ni t ;
•OUlev
t0.«l
Looping :
'
i " ' , i ' >
FOR
FORi'=e,TOe,(STEPc,l
• V d e n o t e s a n u m e r i c a l
variable, and e,, e, and
Cy represent a numeri
cal expression respec
tively.
Declares the beginning of a loop
in which numerical value v
changes from initial value e, to
terminal value e, in increments o.f
ey
Th e loop is repeated
fimes
between the FOR and NEXT
statements. If the increment
is omitted, e, is regarded as " 1 ".
P. 4 9
-62-
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