What is the ‘ref’ and ‘out’ parameter?

Question

Om ji mishra · Answer

REF: - In the ref parameter, we pass the parameter by using ‘ref’ keyword. When we pass any ref parameter then we have to assign value in that variable those we have to pass. Without assigning we cannot pass the parameter.
Syntax: - method name(refand value type variable name);
OUT: - In the out parameter, we pass the parameter by using ‘out’ keyword. When we pass any out parameter then we don’t have assign value in that variable those we have to pass.
Syntax: - method name(out value type variable name);
Example: -andquot;OUTandquot;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace BreakAndContinue
{
and  and  class Program
and  and  {
and  and  and  and  and public static void Add(out int a)
and  and  and  and  {
and  and  and  and  and  and  a = 50;
and  and  and  and  and  and  Console.WriteLine(a);
and  and  and  and  }
and  and  and  and  static void Main(string[] args)
and  and  and  and  {
and  and  and  and  and  and  int b;       
and  and  and  and  and  and  Add(out b);
and  and  and  and  and  and  Console.ReadKey();
and  and  and  and  }
and  and  and  and  and }
and  and  }
Example: -andquot;refandquot;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace BreakAndContinue
{
and  and  class Program
and  and  {
and  and  and  and  and public static void Add(ref int a)
and  and  and  and  {
and  and  and  and  and  and  a = 50;
and  and  and  and  and  and  Console.WriteLine(a);
and  and  and  and  }
and  and  and  and  static void Main(string[] args)
and  and  and  and  {
and  and  and  and  and  and  int b=1;       
and  and  and  and  and  and  Add(ref b);
and  and  and  and  and  and  Console.ReadKey();
and  and  and  and  }
and  and  and  and  and }
and  and  }

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What is the ‘ref’ and ‘out’ parameter?

Om ji mishra

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