Apple IIe - Page 57

Applesoft BASIC Programming 57
When a + or - sign precedes a number, the symbol is used to
specify that number's sign. When + or - is used to change a
number's sign, that usage is known as a unary operation. Unary
operators can be used to change the sign of a numeric constant
or variable as shown below:
100 LET A= -A
When unary operators are used in the manner shown above, the
unary operation is regarded as an arithmetic operation.
The term arithmetic expression is used to describe the use of an
arithmetic operator with numeric constants and/or variables.
The
following are examples of arithmetic expressions.
x + y + 70
100/A + B
3000. 10+1
Exponentiation is the process of raising a number to a specified
power. For example, in the following,
AS
the numeric variable A would be evaluated as:
A*A*A*A*A
In Applesoft BASIC, exponentiation is indicated with the caret
arrow symbol,A .
Exponentiation can be used in
an arithmetic expression as shown
below:
The preceding expression would evaluate to 73.