OR for setting bits in Embedded C - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set bit 2 of the variable 'flags'.

Embedded C

flags [1] (1 << 2);

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

A|=

B&=

C=

D^=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '&=' clears bits instead of setting them.

Using '^=' toggles bits instead of just setting them.

Using the OR assignment operator '|=' sets bit 2 without changing other bits.

2fill in blank

medium

Complete the code to set bits 0 and 3 of 'status' using OR.

Embedded C

status [1] (1 << 0) | (1 << 3);

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

A&=

B=

C^=

D|=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' overwrites all bits, losing previous data.

Using '&=' clears bits instead of setting them.

The '|=' operator sets bits 0 and 3 without changing other bits.

3fill in blank

hard

Fix the error in the code to correctly set bit 5 of 'control'.

Embedded C

control [1] 1 << 5;

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

A=

B|=

C^=

D&=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' overwrites all bits, losing previous settings.

Using '&=' clears bits instead of setting them.

Using '|=' with '1 << 5' sets bit 5 correctly.

4fill in blank

hard

Fill both blanks to set bits 1 and 4 of 'reg' using OR.

Embedded C

reg [1] (1 << 1 [2] 1 << 4);

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

A|=

B&

C|

D^

Attempts:

3 left

💡 Hint

Common Mistakes

Using '&' instead of '|' to combine bits clears bits.

Using '^' toggles bits instead of setting them.

Use '|=' to assign and '|' to combine bits 1 and 4.

5fill in blank

hard

Fill all three blanks to set bits 0, 2, and 7 of 'flags' using OR.

Embedded C

flags [1] (1 [2] 1 << 2 [3] 1 << 7);

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

A|=

B&

C|

D^

Attempts:

3 left

💡 Hint

Common Mistakes

Using '&' clears bits instead of setting them.

Using '^' toggles bits instead of setting them.

Use '|=' to assign and '|' to combine multiple bits to set bits 0, 2, and 7.