---
title: "Switch 文"
content_type: tutorial
url: "https://learn.unity.com/tutorial/switch-wen?language=ja"
language: ja
difficulty: beginner
duration_minutes: 5
unity_version:
  - "2019.3"
  - "2019.2"
  - "2019.1"
  - "2018.4"
  - "2018.3"
  - "2018.2"
  - "2018.1"
  - "2017.4"
  - "2017.3"
  - "2017.2"
  - "2017.1"
  - "5.x"
  - "4.x"
supported_unity_versions:
  - name: "2019.3"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2019.3"
  - name: "2019.2"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2019.2"
  - name: "2019.1"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2019.1"
  - name: "2018.4"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2018.4"
  - name: "2018.3"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2018.3"
  - name: "2018.2"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2018.2"
  - name: "2018.1"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2018.1"
  - name: "2017.4"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2017.4"
  - name: "2017.3"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2017.3"
  - name: "2017.2"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2017.2"
  - name: "2017.1"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=2017.1"
  - name: "5.x"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=5.x"
  - name: "4.x"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja&version=4.x"
available_languages:
  - name: "en"
    url: "https://learn.unity.com/tutorial/switch-statements.md?language=en"
  - name: "es"
    url: "https://learn.unity.com/tutorial/instruccion-switch.md?language=es"
  - name: "ja"
    url: "https://learn.unity.com/tutorial/switch-wen.md?language=ja"
  - name: "ko"
    url: "https://learn.unity.com/tutorial/switch-mun.md?language=ko"
  - name: "zh-cn"
    url: "https://learn.unity.com/tutorial/switch-yu-ju.md?language=zh-cn"
last_updated: "2026-08-04T14:21:59.000Z"
---

# Switch 文

C# の switch 文で 1 つの値を複数の定数と比較する方法を学び、Unity のスクリプトで活用します。

Switch 文は、合理的な条件分岐のような役割を果たします。単一の変数と一連の定数を比較したい場合に便利です。この動画では、switch 文の書き方と使い方をご紹介します。

本チュートリアルは [Beginner Scripting プロジェクト](https://learn.unity.com/project/beginner-gameplay-scripting)に含まれています。

前回のチュートリアルは：[Enumerations](https://learn.unity.com/tutorial/enumerations?projectId=5c8920b4edbc2a113b6bc26a)

次は：このプロジェクトの最後のチュートリアルとなります。

## 1. Switch 文

[Video](http://www.youtube.com/watch?v=-PWvI3q6_OE)

## **ConversationScript**

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

public class ConversationScript : MonoBehaviour 
{
    public int intelligence = 5;
    
    
    void Greet()
    {
        switch (intelligence)
        {
        case 5:
            print ("Why hello there good sir! Let me teach you about Trigonometry!");
            break;
        case 4:
            print ("Hello and good day!");
            break;
        case 3:
            print ("Whadya want?");
            break;
        case 2:
            print ("Grog SMASH!");
            break;
        case 1:
            print ("Ulg, glib, Pblblblblb");
            break;
        default:
            print ("Incorrect intelligence level.");
            break;
        }
    }
}
```