“一元运算符”是一种对单个操作数进行运算的运算符。
A unary operator is an operator that operates on a single operand.
您可结合一些单一字元以形成较长的运算式。
You can combine several single characters to form a longer expression.
所有指派运算子传回的值，都是指派给左运算元的值。
All assignment operators return the value that is assigned to the left operand.
所有指派运算子传回的值，都是指派给左运算元的值。
All assignment operators return the value that is assigned to the left operand.
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