Priority of Operators

When more than one type of operator appears in an expression, what operation does the language processor do first?

IF (A > 7**B) & (B < 3) | (A||B = C) THEN …

Like the priority of operators within the arithmetic operators, there is an overall priority that includes all operators. The priority of operators is as follows with the highest first.

Overall Operator Priority

\ or ¬ - +: Prefix operators
**: Power® (exponential)
* / % //: Multiply and divide
+ -: Add and subtract
blank || abuttal: Concatenation operators
== = >< etc.: Comparison operators
&: Logical AND
| &&: Inclusive OR and exclusive OR

Thus the previous example presented again below:

IF (A > 7**B) & (B < 3) | (A||B = C) THEN …

given the following values:

A = 8
B = 2
C = 10

would be evaluated as follows:

Convert variables to values

IF (8 > 7**2) & (2 < 3) | (8||2 = 10) THEN …

Compute operations of higher priority within parentheses

Exponential operation

IF (8 > 7**2) & (2 < 3) | (8||2 = 10)  THEN …
       \____/
         49

Concatenation operation

IF (8 > 49) & (2 < 3) | (8||2 = 10)  THEN …
                        \____/
                          82

Compute all operations within parentheses from left to right

IF (8 > 49) & (2 < 3) | (82 = 10)  THEN …
    \____/     \___/     \_____/
       0         1          0

Logical AND

0    &    1    |     0
 \_______/
     0

Inclusive OR

0         |     0
 \_____________/
        0