C#-in,ref,out

 

 

 

 

 Figure on the line

See:

 

 

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

 

public class Test : MonoBehaviour
{
　　// Start is called before the first frame update
　　void Start()
　　{
　　　　int a = 0, b = 1;

 

　　　　Sum2 (REF A, B);
　　　　Debug.Log (string.Format ( "REF need to be evaluated when passed, and this value can be modified after being passed, returns the results {0} =", A));
　　　　Sum3 (C var OUT, B);
　　　　Debug.Log (string.Format ( "OUT corresponds to the function return value, this parameter must be assigned only when the internal processing function must have the equivalent of a non-void return value returned result = {0 } ", C));
　　}

 

　　// 1. In parameter that is unable to compile this because in almost declared variables and readonly, read-only, can not be modified
　　// public void Suml (in A int, int B)
　　// {
　　　　// = A + b;

　　//}

 

　　//2. ref型参数
　　public void Sum2(ref int a, int b)
　　{
　　　　a += b;
　　}
　　//3. out型参数
　　public void Sum3(out int a, int b)
　　{
　　　　a = b + 2;
　　}
}