Radio Shack Pro-2032 Specifications download pdf (Page 32)

A character variable

not

a numerical value - although

may consist

numbers -

but

a variable which contains a character string. In

other

words, "123" just happens

be 1 and 2 and 3 in sequence and

considered the

same

"ABC".

A character

variable

made

attaching a

"$"

a regular variable (A, B,

etc.).

Example:

AS,BS,CS,XS,

Comparison

addition

each

character variable

'is

possible. Other operations

such

subtraction,

multiplication

and division, however, cannot

performed.

Example:

"123"

and

"456"

As a

resu

C$ =

8$,

C$ becomes

"123456".

(For C$ =

+ A$,

becomes

"456123".l

A character variable

can

contain up

7 characters.

addition

these character variables, there

also

exclusive character variable.

The exclusive character variable

"$"

and

can

contain up

30 characters.

Example:

"1234567890ABCDE

FG"

Since this exclusive character variable

can

use

a character

function

(MID

function)

which

will

explained later,

much more convenient than other character variables.

* Numerical variables and character variables which contain the

same

letter cannot

used

at the

same

time

since

they

use

the

same

memory.

For example:

Numerical variable

. bl

Cannot

used

at the

same

time.

aracter

varia e

5-2-2 Substitution Statements

BASIC substitution statements adhere

the

following

format:

Variable

-::

numerical expression

In a BASIC substitution statement,

the

right side which may contain addition, sub-

traction,

multiplication

division

called a "numerical expression".

Example:

Y=2*X

2*X+3,

the

left

side

the variable and the right side

the numerical expression.

The

"="

does

not

mean

"equal",

means

"substitute"-

In other words, the meaning

different

from

normal mathematics where

"the

left

side

(Y) and the right side

(2*

X+3) are equal"_

means

"input

the operation result

the right side

(2*X+3l

into

the

left

side

(V)".

may

easier

understand

thinking

Y = 2 *

X+3

2*X+3.

~29-

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 71 72

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Radio Shack Pro-2032 Specifications Page 32

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