Debug.Log for debugging in Unity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Debug.Log used for in Unity?

Debug.Log is used to print messages to the Console window in Unity. It helps developers see values and messages while the game runs, making it easier to find and fix problems.

beginner

How do you print the value of a variable score using Debug.Log?

You write Debug.Log("Score: " + score); This shows the text "Score:" followed by the current value of score in the Console.

intermediate

What is the difference between Debug.Log, Debug.LogWarning, and Debug.LogError?

Debug.Log prints normal messages.<br>Debug.LogWarning prints warning messages that highlight potential issues.<br>Debug.LogError prints error messages that show serious problems.

intermediate

Can Debug.Log slow down your game if used too much? Why?

Yes. Printing many messages every frame can slow the game because writing to the Console takes time. Use Debug.Log carefully and remove or limit it in final builds.

beginner

How do you clear the Console window in Unity?

You click the Clear button at the top of the Console window. This removes all previous messages so you can see new ones clearly.

What does Debug.Log do in Unity?

A Changes the game score

B Prints messages to the Console window

C Starts the game

D Stops the game

Debug.Log prints messages to the Console to help with debugging.

Which Debug method shows an error message?

A Debug.LogWarning

B Debug.Log

C Debug.LogError

D Debug.Clear

Debug.LogError prints error messages in the Console.

How do you print the value of a variable health using Debug.Log?

A Debug.Log(health);

B Debug.Log("health");

C Debug.Log(health + "Health");

D Debug.Log("Health: " + health);

Use Debug.Log("Health: " + health); to print a label and the variable value.

What happens if you use Debug.Log too much in your game?

A The game may slow down

B The game runs faster

C The Console clears automatically

D The game crashes immediately

Too many Debug.Log calls can slow the game because printing messages takes time.

Where do Debug.Log messages appear in Unity?

A In the Console window

B In the Scene view

C In the Inspector window

D In the Project window

Messages from Debug.Log appear in the Console window.

Explain how Debug.Log helps you find problems in your Unity game.

Think about how seeing messages can tell you what your game is doing.

Describe the difference between Debug.Log, Debug.LogWarning, and Debug.LogError.

Consider how each type signals different levels of issues.