Expressions

Expressions evaluate one or more operators. Most expressions and the operators therein return a value. Operators have operands: Unary operators have a right-side operand, whereas binary operators have a left-side and right-side operand. Although expression statements should assign the result of an expression, expression statements consisting of function invocation, increment, decrement, and new operators are exempted from this requirement.

With the exception of the assignment operator, operands of an expression are evaluated from left to right. Expressions can contain multiple operators; operators are evaluated in order of precedence. Use parentheses to change the precedence or simply clarify the default precedence.

Table 1-11 lists the order of precedence.

Table 1-11: Order of Precedence for Expressions

Precedence	Operator
1	array '[ ]', checked , function '()', member operator '.', new, postfix decrement , postfix increment, typeof, and unchecked operators
2	unary addition '+', casting '()', one complement '~', not '!', prefix decrement, prefix increment, unary subtraction '-'operators
3	division '/', and modulus '%', multiplication '*' operators
4	binary addition '+' and binary subtraction '-' operators
5	left-shift '<<' and right-shift '>>' operators
6	as, is, less than '<', less than or equal to '<=', greater than '>', greater than or equal to '>=' operators
7	equals '==' and not equal '!=' operators
8	Logical And '&' operator
9	Logical XOR '^' operator
10	Logical Or '|' operator
11	Conditional And '&&' operator
12	Conditional Or '||' operator
13	Conditional '?:' operator
14	Assignment '=', compound '*=, /-=, %=, +=, -=, <<=, >>=, &=, ^=, and |=', and null coalescing '??' operator