C Books Guide and List
C++ Books Guide and List
Best Java Books

3,749 questions

4,049 answers

114 comments

10,705 users

Which bitwise operator is suitable for checking whether a particular bit is ON or OFF in C?

0 votes
272 views
asked Jan 8, 2014 by sara Guru (24,570 points)

1 Answer

0 votes
Bitwise AND operator.

Example: Suppose in byte that has a value 10101101 . We wish to check whether bit number 3 is ON (1) or  OFF (0) . Since we want to check the bit number 3, the second operand for AND operation we choose is binary 00001000, which is equal to 8 in decimal.

Explanation:

ANDing operation :

10101101 original bit pattern

00001000 AND mask

---------

00001000 resulting bit pattern

---------

The resulting value we get in this case is 8, i.e. the value of the second operand. The result turned  out to be a 8 since the third bit of operand was ON. Had it been OFF, the bit number 3 in the resulting bit pattern  would have evaluated to 0 and complete bit pattern would have been 00000000. Thus depending upon the bit number to be checked in the first operand we decide the second operand, and on ANDing these two operands the result decides whether the bit was ON or OFF.
answered Jan 8, 2014 by rajesh Guru (39,140 points)

Related questions

0 votes
1 answer 44 views
0 votes
1 answer 1,503 views
0 votes
1 answer 69 views
0 votes
1 answer 33,439 views
0 votes
1 answer 111 views
...