Bit Manipulation Basics AND OR XOR NOT Left Right Shift in DSA C - Interactive Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to perform bitwise AND on two integers a and b.

DSA C

int result = a [1] b;

Drag options to blanks, or click blank then click option'

A|

B&

C^

D~

Attempts:

3 left

💡 Hint

Common Mistakes

Using | (bitwise OR) instead of & (bitwise AND).

Using ^ (bitwise XOR) which returns 1 only if bits differ.

The bitwise AND operator & compares each bit of two numbers and returns 1 only if both bits are 1.

2fill in blank

medium

Complete the code to perform a left shift by 2 bits on integer x.

DSA C

int shifted = x [1] 2;

Drag options to blanks, or click blank then click option'

A<<

B>>

C&

D|

Attempts:

3 left

💡 Hint

Common Mistakes

Using >> (right shift) instead of << (left shift).

Using bitwise AND or OR operators mistakenly.

The left shift operator << moves bits to the left, effectively multiplying the number by 2 for each shift.

3fill in blank

hard

Fix the error in the code to perform bitwise NOT on variable val.

DSA C

int result = [1]val;

Drag options to blanks, or click blank then click option'

A~

B|

C&

D^

Attempts:

3 left

💡 Hint

Common Mistakes

Using & or | which are AND and OR operators.

Using ^ which is XOR, not NOT.

The bitwise NOT operator ~ flips all bits of the number.

4fill in blank

hard

Fill both blanks to create a mask that sets the 3rd bit of number num using bitwise OR.

DSA C

int mask = 1 [1] 2;
int result = num [2] mask;

Drag options to blanks, or click blank then click option'

A<<

B>>

C|

D&

Attempts:

3 left

💡 Hint

Common Mistakes

Using right shift instead of left shift for mask.

Using AND instead of OR to set the bit.

Shift 1 left by 2 to create a mask for the 3rd bit, then use OR | to set that bit in num.

5fill in blank

hard

Fill all three blanks to create a mask for the 1st bit, toggle the 1st bit of variable val using XOR, and isolate the 1st bit using AND.

DSA C

int mask = 1 [1] 0;
int toggled = val [2] mask;
int isolated = val [3] mask;

Drag options to blanks, or click blank then click option'

A<<

B^

C&

D|

Attempts:

3 left

💡 Hint

Common Mistakes

Using OR instead of XOR to toggle bits.

Using right shift instead of left shift for mask.

Shift 1 left by 0 to create mask for 1st bit, XOR ^ toggles the bit, AND & isolates the bit.