Left shift and right shift in C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to left shift the number 1 by 3 positions.

C

int result = 1 [1] 3;
printf("%d\n", result);

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

A<<

B>>

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using the right shift operator instead of left shift.

Using arithmetic operators like + or -.

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

2fill in blank

medium

Complete the code to right shift the number 16 by 2 positions.

C

int result = 16 [1] 2;
printf("%d\n", result);

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

A>>

B<<

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using the left shift operator instead of right shift.

Using arithmetic operators like + or -.

The right shift operator >> moves bits to the right, dividing the number by 2 for each shift.

3fill in blank

hard

Fix the error in the code to correctly left shift the variable x by 4.

C

int x = 2;
int y = x [1] 4;
printf("%d\n", y);

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

A>>

B<<

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using right shift operator instead of left shift.

Using arithmetic operators.

To left shift the value of x by 4 bits, use the << operator.

4fill in blank

hard

Fill both blanks to create a dictionary-like structure using bit shifts: shift 1 left by 5 and shift 32 right by 3.

C

int a = 1 [1] 5;
int b = 32 [2] 3;
printf("%d %d\n", a, b);

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

A<<

B>>

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong shift operators.

Using arithmetic operators instead of shifts.

Use left shift << to multiply by powers of two, and right shift >> to divide by powers of two.

5fill in blank

hard

Fill all three blanks to compute: shift x left by 2, y right by 1, and add z.

C

int x = 3, y = 8, z = 5;
int result = (x [1] 2) + (y [2] 1) + [3];
printf("%d\n", result);

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

A<<

B>>

Cz

Dy

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up shift operators.

Adding wrong variables.

Shift x left by 2 bits, shift y right by 1 bit, then add z.