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C# includes unary operators, binary operators, and one ternary operator. The following table summarizes the operators, listing them in order of precedence from highest to lowest:
Section |
Category |
Operators |
7.5 |
Primary |
x.y f(x) a[x] x++ x-- new typeof checked unchecked |
7.6 |
Unary |
+ - ! ~ ++x --x (T)x |
7.7 |
Multiplicative |
* / % |
7.7 |
Additive |
+ - |
7.8 |
Shift |
<< >> |
7.9 |
Relational and type testing |
< > <= >= is as |
7.9 |
Equality |
== != |
7.10 |
Logical AND |
& |
7.10 |
Logical XOR |
^ |
7.10 |
Logical OR |
| |
7.11 |
Conditional AND |
&& |
7.11 |
Conditional OR |
|| |
7.12 |
Conditional |
?: |
7.13 |
Assignment |
= *= /= %= += -= <<= >>= &= ^= |= |
When an expression contains multiple operators, the precedence of the operators controls the order in which the individual operators are evaluated. For example, the expression x + y * z is evaluated as x + (y * z) because the * operator has higher precedence than the + operator.
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:
Except for the assignment operators, all binary operators are left-associative, meaning that operations are performed from left to right. For example, x + y + z is evaluated as (x + y) + z.
The assignment operators and the conditional operator (?:) are right-associative, meaning that operations are performed from right to left. For example, x = y = z is evaluated as x = (y = z).
Precedence and associativity can be controlled using parentheses. 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.
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