Bit Manipulation and C++ Concepts Quiz Quiz

1. Bitwise AND Operation

   Which operator in C++ represents the bitwise AND operation?

   1. u0026
   2. u0026u0026
   3. |
   4. ^
   5. and

2. Result of Bitwise XOR

   What is the result of 6 ^ 3 in C++?

   1. 5
   2. 9
   3. 3
   4. 7
   5. 2

3. Left Shift Operator

   What will be the output of the following code snippet: int a = 2 u003Cu003C 3; What is the value of 'a'?

   1. 16
   2. 10
   3. 8
   4. 6
   5. 12

4. Bitwise NOT Result

   If you apply the bitwise NOT operator '~' to 0 in C++, what result do you get?

   1. -1
   2. 0
   3. 1
   4. 255
   5. 4294967295

5. Checking If Number Is Even

   Which code snippet correctly checks if an integer 'n' is even using bitwise operations in C++?

   1. if ((n u0026 1) == 0)
   2. if ((n | 1) == 1)
   3. if (n % 2)
   4. if ((n u0026u0026 1) == 1)
   5. if ((n ^ 1) == 1)

6. Bitwise OR Usage

   Which C++ operator is used for the bitwise OR operation?

   1. |
   2. ||
   3. u0026
   4. or
   5. %%

7. Clearing a Bit

   Given int x = 7, to clear the 1st bit from the right (least significant), which C++ statement achieves this?

   1. x = x u0026 ~1;
   2. x = x | 1;
   3. x = x ^ 0;
   4. x = x u0026u0026 1;
   5. x = x u003Eu003E 1;

8. Swapping Two Values

   What is the correct bitwise way to swap integers 'a' and 'b' in C++ without using a third variable?

   1. a ^= b; b ^= a; a ^= b;
   2. a = b; b = a;
   3. a += b; b -= a; a -= b;
   4. swap(a, b);
   5. a = a | b; b = a u0026 b; a = a ^ b;

9. Identifying Bit Shift Direction

   In C++, what does the 'u003Eu003E' operator do to the binary representation of a variable?

   1. Shifts bits right
   2. Shifts bits left
   3. Adds one
   4. Negates bits
   5. Flips every bit

10. Counting Set Bits

    Which C++ code finds the number of 1's in the binary representation of integer n?

    1. while(n){ count+=(nu00261); nu003Eu003E=1; }
    2. while(n){ count+=(n|1); nu003Cu003C=1; }
    3. if(nu00261){count++;}
    4. count=n%2;
    5. count=nu0026n;