C# Tutorial for Beginners 13 - Passing Reference , Output and params Pa...

Passing Reference Parameter 

using System;
namespace MyProject.Examples
{
    class ExampleOne
    {
        public static void Main()
        {
            int y = 0;
            MyFunc(ref y);

            Console.WriteLine(y);


            Console.ReadKey();
        }

        public static void MyFunc(ref int x)
        {
            x = 10;
        }

    }
}

Passing Output Parameter 

using System;
namespace MyProject.Examples
{
    class ExampleOne
    {
        public static void Main()
        {
            int a=45,b=67;
            int sum = 0;
            int product = 0;
            MyCalc(a, b, out sum, out product);

            Console.WriteLine("Sum = {0} and Product ={1}", sum,product);


            Console.ReadKey();
        }

        public static void MyCalc(int x, int y, out int sum, out int prod)
        {
            sum = x + y;
            prod = x * y;
             
        }

    }
}

Passing params Parameter 

using System;
namespace MyProject.Examples
{
    class ExampleOne
    {
        public static void Main()
        {
            string[] myArray = new string[4];
            myArray[0] = "name1";
            myArray[1] = "name2";
            myArray[2] = "name3";
            myArray[3] = "name4";

            ArrayMethod();
            //or
            ArrayMethod(myArray);
            //or
            ArrayMethod("n1","n2","n3");

            Console.ReadKey();
        }

        public static void ArrayMethod(params string[] names)
        {
           foreach(string name in names)
           {
               Console.WriteLine(name);
           }
           Console.WriteLine("Array Size = {0}", names.Length);
             
        }

    }
}

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