The result of the binary &operator is the bitwise AND of the operands (that is, each bit in the result is set if and only if e ...

• 二进制位操作符“&”的运行结果是对它左右两边的两个操作数进行位方式的“与”操作（也就是说，当且仅当每一个操作数的相应位为真时结果的这一位才为真）