Output with Debug.Log

Learn to print to the console with Debug.Log and watch values.

Debug.Log and the Console Window

In Unity, Debug.Log is used to verify code execution and monitor variables while the game runs. All messages sent via Debug.Log are printed to the Console window of the Unity editor. This method is the developer's most crucial tool for testing mechanics and diagnosing bugs.

Debug.Log("Oyun basariyla baslatildi!");

Double-clicking a message in the Console window jumps directly to the line of code that triggered it.

Warnings and Error Messages

You can send not only informational messages to the console, but also warnings and errors tailored to specific situations. Use Debug.LogWarning with a yellow icon for potential issues, and Debug.LogError with a red icon for critical failures. You can concatenate variable values using the + operator.

int can = 15;
Debug.Log("Kalan can: " + can);
Debug.LogWarning("Can degeri cok dustu!");

Different log types can be filtered in the Console window, making problem detection straightforward.

Exercise Print variable with Debug.Log

Inside the Main method, use Debug.Log to print the expression "Puan: " + score to the console.

Show example solution

using System;

public static class Debug
{
    public static void Log(object message) => Console.WriteLine(message);
}

public class Program
{
    public static void Main()
    {
        int score = 50;
        Debug.Log("Puan: " + score);
    }
}

Test yourself

In which editor window are messages printed with Debug.Log() listed in Unity?
- Console
- Hierarchy
- Inspector
- Project
Show answer

Console — In Unity, Debug.Log, Debug.LogWarning, and Debug.LogError outputs are displayed in the Console window.

Printing info to console

Debug.____("Oyun basladi!");

Show answer

Debug.Log("Oyun basladi!");

Log types and purposes

Debug.Log

Prints a standard informational message
Debug.LogWarning

Prints a yellow warning message
Debug.LogError

Prints a red critical error message
Console penceresi

Where logs and compile errors are listed

Next lesson: Summary - C# basics

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