Casio FX-795P - READ Variable name [, variable name]*

CHAPTER 7 Command Reference
a
A
space
following
data
is
not
disregarded.
Therefore,
anerror
will
be
generated
if
a
space
is
inserted
after
numerical
data.
DATA 1, 2u,; 3,
Example:
cr Bs Ay
These spaces are not disregarded.
Variable name [, [variable name] ]*
READ
Function:
Reads the content of a DATA statement.
Parameter:
Variable
name:
Numeric
variable
or
character
variable.
An array variable can be used.
Explanation:
1)
Allocates
data
in
the
currently
specified
DATA
statement
sequentially
to
a
specified
variable.
2)
Only
numéric
type
data
can
be
read
for
a
numeric
vaiiable.
3)
Data
in
DATA
statements
are
read
sequentially
with
the
smallest
line
number
first,
and
sequentially
from
the
beginning
in
a
statement.
4)
After
the
necessary
data
are
read
by'a
READ
statement,
the
following
data
are
read
by
the
next
READ
statement.
5)
The
first
data
in
the
program
area
where
a
READ
statement
exists
is
read
by
the
first
execution
of
this
statement
after
which
data
in
the
program
area
at
that
time
are
read
sequentially.
6)
The
specification
of
data
to
be
read
can
be
changed
by
a
RESTORE
state-
ment.
7)
When
the
number
of
data
in
a
DATA
statement
is
smaller
than
the
number
of
variables
in
a
READ
statement,
an
error
(Error
4)
occurs.
8)
When
a
space
exists
at
the
beginning
of
data,
it is
skipped.
158
aa
ST
7-2 Program Commands
Example:
1@ DATA 1,2,3
2@ READ A,B
30 PRINT A3B
4@ DATA 4,5
5@ READ C,D,E
- 6@ PRINT CIDE
7@ END
* Reads data sequentially from a DATA statement and displays them.
[Line No.] ®
Numeric-expression
RESTORE
Function:
Specifies the location of data to be read by a READ statement.
Parameter:
Line No.: Numeric expression. Values below the decimal point
are discarded.
1-¢ line No. ¢ 9999
Explanation:
1) Specifies a DATA statement where data to be read by a READ statement
exist.
2) When a line number is omitted, the data specification is cancelled. After this,
the first data in the program area where a READ statement exists are speci-
fied and read by the first READ statement that is executed.
3) When a line number of the program area is specified by a RESTORE state-
ment, data of the DATA statement with this line number are read sequential-
ly by the READ statement.
4) When a specified line number’ does not exist or a DATA statement does not
exist on a specified line number and after, an error (Error 4) occurs.
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