2.10 赋值运算符与表达式
Assignment Operators(赋值操作符):
=: Assignment(赋值)+=: Addition Assignment(加法赋值)-=: Subtraction Assignment(减法赋值)*=: Multiplication Assignment(乘法赋值)/=: Division Assignment(除法赋值)%=: Modulus Assignment(取模赋值)
赋值运算符要求左操作数必须是左值(lvalue)。左值表示存储在计算机内存中的对象,而不是常量或计算的结果。
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