C# Ref and Out Keywords

Ref - Ref is two ways from caller to callee and back.

static void Main(string[] args)
        {
            int outSideVar = 10;
            GetNextNameByOut(out outSideVar);

Console.WriteLine(outSideVar);
}

        static void GetNextNameByOut(out int inSideVar)
        {
            inSideVar = inSideVar + 20;
        }

Out - Data sent from the caller has been discarded and its mandatory to initialize the variables inside the callee.

Out is a ne way from callee to caller.

static void Main(string[] args)
        {
            int outSideVar = 10;
            GetNextNameByOut(out outSideVar);

Console.WriteLine(outSideVar);
}

        static void GetNextNameByOut(out int inSideVar)
        {
            inSideVar = 100;
            inSideVar = inSideVar + 20;
        }

C#