Jon Jagger
jon@jaggersoft.com
Table of Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Notes DownloadECMA-334 C# Language Specificationpreviousnextprevious at this levelnext at this level 14 Expressionsprevious at this levelnext at this level 14.2 Operatorsprevious at this levelnext at this level 14.2.1 Operator precedence and associativity Paragraph 11 When an expression contains multiple operators, the precedence of the operators controls the order in which the individual operators are evaluated. [Note: For example, the expression x + y * z is evaluated as x + (y * z) because the * operator has higher precedence than the binary + operator. end note] 2 The precedence of an operator is established by the definition of its associated grammar production. [Note: For example, an additive-expression consists of a sequence of multiplicative-expressions separated by + or -operators, thus giving the + and -operators lower precedence than the *, /, and % operators. end note] Paragraph 21 The following table summarizes all operators in order of precedence from highest to lowest:
Section Category Operators
14.5 Primary x.y f(x) [x] x++ x-- new
typeof checked unchecked
14.6 Unary + - ! ~ ++x --x (T)x
14.7 Multiplicative * / %
14.7 Additive + -
14.8 Shift << >>
14.9 Relational and
type-testing
< > <= >= is as
14.9 Equality == !=
14.10 Logical AND &
14.10 Logical XOR ^
14.10 Logical OR |
14.11 Conditional AND &&
14.11 Conditional OR ||
14.12 Conditional ?:
14.13 Assignment = *= /= %= +-= -= <<= >>= &= ^= |=
When an operand occurs between two operators with the same precedence, the associativity of the operators controls the order in which the operations are performed:
Paragraph 31 Precedence and associativity can be controlled using parentheses. [Example: For example, x + y * z first multiplies y by z and then adds the result to x, but (x + y) * z first adds x and y and then multiplies the result by z. end example]
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