Radio Shack TRS-80 Model III - Page 116

TRS-80 MODEL
Type
Declaration
Tags
You can override
BASIC'S normal
typing criteria
by adding the following
'
'tags" to
the
end of the numeric
constant:
! Makes the number
single-precision
. For example
, in the
statement:
A= 12.345678901234!
the
constant is
classified as
single-precision, and
shortened
to seven digits:
12.34567
E
Single-precision
exponential
format. The
E indicates the
constant is
to be
multipled
by a specified
power of
10. For example:
A
=
1.2E5
stores the single-precision
number 120000 in A.
#
Makes
the number
double-precision.
For example, in
statement:
PRINT
3#/7
the first
constant
is classified
as double-precision
before the
division takes
place.
D
Double-precision
exponential format.
The D indicates
the constant
is to
be
multipled
by a specified
power of
10. For example:
A=1.23456789D-1
The
double-precision
constant has the value
0. 123456789.
How
BASIC
Classifies
Variables
When
BASIC encounters
a variable name in the program, it classifies it as either a
string, integer,
single-
or double-precision number.
BASIC
classifies all
variable
names as
single-precision
initially.
For
example:
AB
AMOUNT
XY
L
are all single-precision
initially.
If this
is the first line of
your program:
LP
=
1.2
BASIC
will classify
LP as
a single-precision
variable.
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