Commodore VIC-20 - Page 80

EXAMPLES:
2 f 2 results in 4
12 T 2 results in 144 I
1 | 3 results in 1
When an expression has multiple operations, as in:
A + CM0/2T 2
There is a built-in hierarchy for evaluating the expression. First,
the exponentiation js considered, followed by the unary minus (-),
followed by the multfplication and division (*/), followed then by the
addition and subtraction (+ -). Operators of the same hierarchy
are evaluated from lett to right.
This natural order of operation can be overridden by the use of
parentheses. Any operation within parentheses is performed first.
EXAMPLES:
*2 results in 6
(4+1)*2 results in 10
100*4/2-1 results in 199
100*(4/2-1) results in 100
100^(4/(2-1}} results in 400
When parentheses are present, VIC BASIC evaluates the
innermost set first, then the next innermost, etc. Parentheses can
be nested to any level and may be used freely to clarify the order of
operations being performed in an expression.
A relational operator specifies a "true" or "false" relationship
between adjacent terms. The specified comparison is made, and
then the relational expression is replaced by a value of true (-1) or
false (0), Relational operators are evaluated after all arithmetic
operations have been performed.
EXAMPLES:
1 =5-4
14>66
15> = 15
results
results
results
in
in
in
true
false
true
(-D
(0)
(-1)
Relational operators can be used to compare strings. For
comparison purposes, the letters of the alphabet have the order
A<B, B<C, C<D, etc. Strings are compared by comparing their
stored character values. Characters are stored using a special
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