Bitwise operator ACTION

1. Bitwise AND operator (&)

Since any one is the result of the 0,& operation, it is 0, so you can use this operator to set the unnecessary bits in the variable to 0. The method is to create a ' mask ' and then use & to combine it with the original variable. such as: Letter=letter & 0x0F;

2. Bitwise OR operator (|)

One of the two bits is the result of the 1,or operation is 1, so the result of these two variables is that both bits are opened, such as: Style |= Hredraw | Vredraw;

3. Bitwise EOR operator (^)

Letter1 0100 0001

Letter2 0101 1010

After the EOR operation, they are:

Result 0001 1011

The XOR operator has an attribute, and the two variables exchange values without occupying any intermediate storage units. This applies to all integer values. Such as:

First ^= last; Result First is 0001 1011

Last ^= first; Result is 0100 0001

First ^= last; Result First is 0101 1010

4. Bitwise NOT operator (~)

The position of the number is reversed, 1 change 0,0 to 1.

5. Shift Operator (<<) (>>)

Moving the N-bit to the left is equivalent to multiplying the value by 2 n times, which is equivalent to 2n times. Moving right is equivalent to excluding.

Bitwise operator ACTION