Laser 128 - Functional Operators; String Operations

INTRODUCTION
The equal sign "=" is also used to assign a
value to a variable (see LET state ment in
Chapter 3 of this manual.)
If a rithmetic al, relational, and logical
opera tor s are combined in one e xpress ion,
the order of precedence of evaluation is:
arithmetic, then relation al, then logical.
1.6.4 FUNCTIONAL OPERATORS
BASIC has a number of built-in or "intrin sic"
functions which may be used in either direct
or indirect mode. These are described in
Chapter 4.
Exa mple s are T AN(A), which calculates the
tan ge nt of an angle A, and LEFT$(X $, 3),
which return s the three leftmo st characters
of a string X$.
You can define your own fun ct ions u sing
the DEF FN command . (see DEF FN
command in Chapter 3)
1.7 STRING OPERATIONS
Two s trings can be comp a red us ing the
rela tion al operators . They work by
comparing the numeric ASCII values of each
co rr espo nding character of eac h s trin g.
The conditions for equality or inequality
dep e nd on whether the ASCII codes a re
higher or lower.
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