Coroutine basics (IEnumerator) in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a coroutine named MyCoroutine.

Unity

StartCoroutine([1]);

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AIEnumerator

BMyCoroutine

CMyCoroutine()

DStartCoroutine()

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting parentheses and writing just the method name.

Trying to call StartCoroutine inside itself.

To start a coroutine, you call StartCoroutine with the coroutine method including parentheses.

2fill in blank

medium

Complete the code to make the coroutine wait for 2 seconds.

Unity

yield return [1];

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Anew WaitForSeconds(2)

BWaitForSeconds(2)

C2

Dnull

Attempts:

3 left

💡 Hint

Common Mistakes

Not using 'new' keyword before WaitForSeconds.

Yielding just a number instead of a WaitForSeconds object.

To pause a coroutine, you yield return a new WaitForSeconds object with the desired time.

3fill in blank

hard

Fix the error in the coroutine declaration to make it valid.

Unity

private [1] MyCoroutine() {
    yield return null;
}

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Avoid

BIEnumerator

Cint

DCoroutine

Attempts:

3 left

💡 Hint

Common Mistakes

Using void instead of IEnumerator.

Using Coroutine as return type which is incorrect for method signature.

Coroutines must return IEnumerator to work properly in Unity.

4fill in blank

hard

Fill both blanks to create a coroutine that waits 3 seconds and then prints a message.

Unity

private IEnumerator WaitAndPrint() {
    yield return [1];
    Debug.[2]("Waited 3 seconds");
}

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Anew WaitForSeconds(3)

BLog

CPrint

DWaitForSeconds(3)

Attempts:

3 left

💡 Hint

Common Mistakes

Using WaitForSeconds(3) without 'new'.

Using Debug.Print instead of Debug.Log.

The coroutine waits 3 seconds using new WaitForSeconds(3) and then logs a message with Debug.Log.

5fill in blank

hard

Fill all three blanks to create a coroutine that waits 1 second, then waits 2 seconds, and finally prints 'Done'.

Unity

private IEnumerator DoubleWait() {
    yield return [1];
    yield return [2];
    Debug.[3]("Done");
}

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Anew WaitForSeconds(1)

Bnew WaitForSeconds(2)

CLog

DPrint

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the wait times or missing 'new' keyword.

Using Debug.Print instead of Debug.Log.

The coroutine waits 1 second, then 2 seconds, then prints 'Done' using Debug.Log.