Английский язык в информационных технологиях. Демкина Л.М. - 48 стр.

When expressions contain operators from more than one category, arithmetic operators are
evaluated first, comparison operators are evaluated next, and logical operators are evaluated
last. Comparison operators all have equal precedence; that is, they are evaluated in the left-
to-right order in which they appear. Arithmetic and logical operators are evaluated in the
following order of precedence.
Arithmetic                      Comparison                          Logical

Description            Symbol   Description                Symbol   Description           Symbol

Exponentiation         ^        Equality                   =        Logical negation      Not

Unary negation         -        Inequality                 <>       Logical conjunction   And

Multiplication         *        Less than                  <        Logical disjunction   Or

Division               /        Greater than               >        Logical exclusion     Xor

Integer division       \        Less than or equal to      <=       Logical equivalence   Eqv

Modulus arithmetic     Mod      Greater than or equal to   >=       Logical implication   Imp

Addition               +        Object equivalence         Is

Subtraction            -

String concatenation   &

When multiplication and division occur together in an expression, each operation is
evaluated as it occurs from left to right. Likewise, when addition and subtraction occur
together in an expression, each operation is evaluated in order of appearance from left to
right.
The string concatenation (&) operator is not an arithmetic operator, but in precedence it
does fall after all arithmetic operators and before all comparison operators. The Is operator
is an object reference comparison operator. It does not compare objects or their values; it
checks only to determine if two object references refer to the same object.




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