C#方法參數實作(1)

隨機範例(未使用ref，沒有返回值)：

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

public class codetrain001 : MonoBehaviour
{
    public int condition = 0;
    public int[] Number = new int[10] { 60, 145, 56, 90, 75, 70, 97, 63, 81, 32 };

    // Use this for initialization
    void Start()
    {

        //Debug.Log("condition is " + condition);
        Oncaculation();

        int Max_number = Number.Max();
        int Min_number = Number.Min();

        if (condition >= 3)
        {
            Debug.Log("Max is " + Max_number);
        }
        else
        {
            Debug.Log("Min is " + Min_number);
        }

    }

    public int Oncaculation()
    {
        condition = Random.Range(0, 5);
        if (condition == 0)
        {
            Debug.Log("狀況0");
        }
        else if (condition == 1)
        {
            Debug.Log("狀況1");
        }
        else if (condition == 2)
        {
            Debug.Log("狀況2");
        }
        else if (condition == 3)
        {
            Debug.Log("狀況3");
        }
        else if (condition == 4)
        {
            Debug.Log("狀況4");
        }
        return condition;
    }
}

---

隨機範例(使用ref，有返回值)：
引用參數ref
int為值類型，值類型參數如果想達到引用類型參數的效果，需要用到引用修飾符ref
(有用new初始化的類型，使用new後才真正開闢內存空間)
如果不使用ref，外部Oncaculation();內的condition(實參)將不會受到Oncaculation()方法的condition(形參)賦值

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

public class codetrain001 : MonoBehaviour
{
    public int condition = 0;
    public int[] Number = new int[10] { 60, 145, 56, 90, 75, 70, 97, 63, 81, 32 };

    // Use this for initialization
    void Start()
    {

        //Debug.Log("condition is " + condition);
        Oncaculation(ref condition);

        int Max_number = Number.Max();
        int Min_number = Number.Min();

        if (condition >= 3)
        {
            Debug.Log("Max is " + Max_number);
        }
        else
        {
            Debug.Log("Min is " + Min_number);
        }

    }

    public int Oncaculation(ref int condition)
    {
        condition = Random.Range(0, 5);
        if (condition == 0)
        {
            Debug.Log("狀況0");
        }
        else if (condition == 1)
        {
            Debug.Log("狀況1");
        }
        else if (condition == 2)
        {
            Debug.Log("狀況2");
        }
        else if (condition == 3)
        {
            Debug.Log("狀況3");
        }
        else if (condition == 4)
        {
            Debug.Log("狀況4");
        }
        return condition;
    }
}