TRS-80
MODEL
III
Q$
CA$ WRD$
ENTRY$
are all string variables
,
regardless
of what attributes have been assigned
to the
letters
Q,C,W and E.
Note that any given variable
name can
represent four different variables.
For
example:
A5#
A5!
A5% A5$
are all
valid and
distinct variable names.
One further
implication of
type declaration: Any variable name
used
without a
tag is
equivalent
to the same variable
name used with one of
the four
tags. For
example, after
the statement:
DEFSTR
C
the variable
referenced
by the name
C 1 is identical
to
the variable
referenced
by the
nameCl$.
How BASIC
Converts Numeric Data
Often yourprogram
might ask BASIC to assign one type of constant
to a different
type
of variable.
For example:
A%
=
2.34
In this
example, BASIC must first convert the single precision constant
2.34 to an
integer
in order to assign it
to
the integer variable A%
.
You might also want
to
convert one type of variable
to
a different
type, such as:
A#
=
A%
A!
=
A#
A!
=
A%
The conversion
procedures are listed
on
the
following
pages.
108
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