Discussion :: Bitwise Operators - General Questions (Q.No.4)
Which bitwise operator is suitable for checking whether a particular bit is on or off?
Answer: Option B
No answer description available for this question.
|Kishore said: (Aug 10, 2010)|
|As we know that truth table of AND is if 2 number is true then only output becomes true. For that reason & is used to find bits on or off.|
|Harshit Bhatia said: (Oct 28, 2010)|
|Yaa, & operator is perfect for find out on or off.|
|Madhureddy said: (Feb 2, 2011)|
|Hai frndz. How & operator is used to check whether a bit is on or off is as follows let us conceive that there is a binary num 10101000 if you want to check third bit is on or off then perform and operation to 00001000 then if 3rd bit is 1 its on else its turned off.
Here if wana check nth bit make n-1 bit as 1 remaining as 0. Then perform and operation then you will know the answer.
|Siraj said: (Feb 4, 2011)|
|Hey anybody can explain me how & operatoer is used to chek on or off ?|
|Amit(Saktimaan) said: (Mar 3, 2011)|
|I don't understand this.|
|Seenu said: (Mar 12, 2011)|
|Hi! Guys this is a simple one. Let consider 8-bit binary number,
Binary(8 bit) = 0000 1100
suppose we want check 3rd bit is on or off(on=1 & off=0), just like this,
0000 1100 (Decimal=12)
0000 0100 (Decimal=4,we are checking 3rd bit so it is 1)
0000 0100 (Decimal=4)
If we got some value then checking bit is on,otherwise off.
In C language,
print("The third bit is on");
print("The third bit is off");
|Riya said: (Apr 29, 2011)|
|What is the difference between && and & ?|
|Payal said: (May 23, 2011)|
|&& is a relational operator it compare two values.
Whereas & is logical operator.
|Ajendra Singh said: (Aug 22, 2011)|
|Relation operator is used to make an expression to compound one whereas bitwise and is used to operate on bits for faster access.|
|Ullas Kulkarni said: (Sep 14, 2011)|
The key difference between & and && is ,its return value
EX; 1&2 returns zero whereas 1&&2 returns one ..
1=0001 & 0010= 0000 on & opertion
and 1(true) and 2(true) so 1&& 2=1(true)
|Joyeeta said: (Mar 17, 2012)|
|While doing bitwise operation, when we do 1&0, we get 0, means the bit is off. When we do 1&1, this proves that the bit is on.|
|Love Shukla said: (May 20, 2012)|
|&& is a Logical operator which combine two or more relation
Ex: let a=5,b=2
true && true = true
i.e, 1 && 1 = 1
While & is a bitwise operator which has ability to support the manipulation of data at bit level
Then, a & b
9 & 15
1001 & 1111 = 1001 (use AND operation on each bit)
i.e, ans:- 9
|Saikat Sinha Ray said: (Jul 31, 2012)|
|& is a bit wise operator that performs the AND operation of binary representation of given numbers.
Ex : 2 && 0 = 0 (In binary 0000 0010 & 0000 0000 = 00000 0000)
&& is a logical operator that matches between two condition
Ex : if(condition1 is true && condition2 is true)
|Shritama said: (Oct 1, 2013)|
|x & 1 = x.
x | 0 = x.
Here no | option.
Only & option.
So answer B.
|Anusha said: (Dec 31, 2013)|
|Yeah, & is the correct answer to turnoff the bit in a number.
The basic operations of & is :
0 & 0 = 0
0 & 1 = 0
1 & 0 = 0
1 & 1 = 1.
|Bhavin said: (Feb 6, 2014)|
|In case & and | both options will be given in question. What will answer for this question?please give my answer.|
|Bit_Ter said: (Jun 15, 2014)|
|@Bhavin the answer is & because,
0 | 1 =1
1 | 1 =1.
0 & 1 =0
1 & 1 =1.
You can see that when you '&' a particular bit (0 or 1) with 1 then the output is the input.
|Dimple said: (Jul 16, 2014)|
|Why we can't use the OR (|) operator instead of AND (&) for checking whether the bit is on or off?|
|Kiran said: (Sep 5, 2014)|
|What is unary operator?|
|Ghanshyam Sharma said: (Dec 31, 2014)|
|I think that the right answer is D.
If I write if(a) then it is 1.
If I write if(!a) then it is 0.
|Gajanan said: (Feb 13, 2015)|
You are correct. Why we can used (|) instead of (&)?
|Navya.Ch said: (Jul 15, 2015)|
|Then why can't we use?|
|Ramya said: (Nov 17, 2015)|
|Can anyone explain bitwise operators by writing a program?|
|Pritam said: (Jan 12, 2016)|
|I don't understand, why always & operator use. Truth table of | or operator also provides logical relation then why always &?|
|Guru Sai Jaya Prakash said: (May 24, 2016)|
|0 | 0 = 0.
1 | 0 = 1.
So, why can't we use like this?
|Rahul_B said: (Jun 2, 2016)|
|@Pritam & @Guru Sai.
There is no option of OR(|) in the given question.
How it be? Explain.
|Vykuntapu Gopi said: (Jul 18, 2016)|
|The output of logical operators gives 0/1.
The output of bitwise operators gives decimal of given numbers.
the a&b are both are non-zero numbers it gives result as 1
So result is 0.
Because one of operands b is zero.
But in bitwise operators, the operation goes on the binary number of given operands.
convert the 2,1 binary numbers in 4 bits that 8421;
2's binary number 0010
1's binary number is 0001
Output is 0
|Anand said: (Dec 7, 2016)|
|What is the use of || operator? Please explain me friends.|
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