Simple Variables - Sharp PC-1403 Operation Manual

80
Simple Variables
Simple variable names are specified by two or more al p hanumeric characters, such as
AA or 81. Unlike fixed variables, simple variables have no dedicated storage area in
the memory. The area for simple variables is automatically set aside (within the
program and data area) when a simple variable is first used.
Since separate memory areas are defined for simple numeric variables and simple
character variables even if they have the same name, variables such as AB and AB$,
for example, may be used at the same time.
Whereas alphanumeric characters are usable for simple variable names, the first
character of a variable name must always be alphabetic and uppercase. If more than
two characters are used to define a variable name, only the first two characters are
meaningful.
A =A$
=
A(1)
=
A$(1)
B
=
8$ =
A(2) ·
=
A${2)
c
=
C$
=
A(3)
=
A$(3)
D
=
0$
=
A(4)
= A$(4)
E = E$
=
A(5)
=
A$(5)
F
=
F$
=
A{6)
=
A$(6)
G
=
G$
=
A(7)
=
A$(7)
H
=
H$
=
A(8)
=
A$(8)
=
1$
=
A(9)
=
A$(9)
J
=
J$
=
A(10)
=
A$(10)
K
=
K$
=
A(11)
=
A$(11)
L
=
L$
=
A(12)
=
A$(12)
M
=
M$
=
A(13)
=
A$(13)
N
=
N$
=
A(14)
=
A$(14)
0
=
0$
=
A(15)"
= A$(15)
p
P$
=
A(16)
=
A$(16)
Q
=
0$
= A(17)
=
A$(17}
R
= R$
=
A(18)
=
A$(18)
s =
S$
=
A(19)
=
A$(19)
T
=
T$
=
A(20)
=
A$(20)
u
=
U$
=
A(21)
= A$(21)
V
=
V$
=
A(22)
=
A$(22)
W
=
W$
=
A(23)
=
A$(23}
x
=
X$
=
A(24)
=
A$(24)
y
=
Y$
= A(25)
=
A$(25)
Z
=
Z$
=
A(26)
=
A$(26)
Concepts and Terms of BASIC
Again, the computer is confused and gives the ERROR 9 message. Look at the figure
shown below to see that the variable name A equals the same area in memory as the
variabl e name A$, and that B equals 8$, and so on for all the letters of the alphabet'.
Figure: