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last_updated: "2026-08-04T14:21:20.000Z"
---

# Variables and Functions

Learn what variables and functions are in C# and how they store and process data in your Unity scripts.

What are Variables and Functions, and how do they store and process information for us?

This tutorial is included in the [Beginner Scripting project](https://learn.unity.com/project/beginner-gameplay-scripting).

Previous: [Scripts as Behavior Components](https://learn.unity.com/tutorial/scripts-as-behaviour-components?projectId=5c8920b4edbc2a113b6bc26a)

Next: [Conventions and Syntax](https://learn.unity.com/tutorial/conventions-and-syntax?projectId=5c8920b4edbc2a113b6bc26a)

## Variables and Functions

[Video](https://connect-mediagw.unity.com/h1/20220104/videos/9d3b1cb9-cee0-4ac0-b71d-cfea2f6f35cf_U_Beginner_2_VariablesandFunctions.mp4) ([Transcript (en)](https://connect-mediagw.unity.com/h1/20220104/c3e0f55f-a3fc-4180-aab5-96b5a2701877_B_02_Variables_And_Functions_v5.0.vtt))

```csharp
using UnityEngine;
using System.Collections;

public class VariablesAndFunctions : MonoBehaviour
{   
    int myInt = 5;
    
    
    void Start ()
    {
        myInt = MultiplyByTwo(myInt);
        Debug.Log (myInt);
    }
    
    
    int MultiplyByTwo (int number)
    {
        int result;
        result = number * 2;
        return result;
    }
}
```