C + + use of bitwise XOR OR operator Introduction _c language

The two values that participate in the operation, or 1 if the corresponding digits are the same, the result is 0. namely: 0^0=0, 1^0=1, 0^1=1, 1^1=0

For example: 10100001^00010001=10110000

0^0=0,0^1=1 0 XOR or any number = any number

1^0=1,1^1=0 1 XOR or any number-any number of counter

Any number of differences or own = put yourself 0

(1) bitwise XOR or can be used to flip certain bits, such as the 2nd and 3rd digits of the logarithm 10100001, and the number and 00000110 can be bitwise XOR.

10100001^00000110=10100111//1010 0001 ^ 0x06 = 1010 0001 ^ 6

(2) the exchange of two values can be achieved by bitwise XOR, without the use of temporary variables. For example, an exchange of two integer a,b values can be achieved by using the following statement:

a=10100001,b=00000110

A=a^b;//a=10100111.

B=b^a;//b=10100001.

A=a^b;//a=00000110.

(3) the difference or operator is characterized in that the number a two times or the same number B (A=a^b^b) is still the original value A.