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Nataly [62]
3 years ago
7

Reference variables allow arguments to be passed by ____________.

Computers and Technology
1 answer:
son4ous [18]3 years ago
7 0

Answer:

Reference

Explanation:

The Reference type variable is such type of variable in C# that holds the reference of memory address instead of value. Examples for reference type are classes, interfaces, delegates and arrays.

We can pass parameters to the method by reference using <em>ref </em>keyword

It’s mandatory to initialize the variable value before we pass it as an argument to the method in c#

For example,

int x = 10;  // Variable need to be initialized

Add(ref x); // method call

If you pass parameters by reference in method definition, any changes made to it affect the other variable in method call.

Here's a sample program:

using System;

namespace ConsoleApplication

{

   public class Test

   {

       public static void Main()

       {

           int i = 10;

           Console.WriteLine("i=" + i);

           Add(ref i);

           Console.WriteLine("i=" + i);

           Console.ReadLine();

       }

       public static void Add( ref int j)

       {

           j = j + 10;

           Console.WriteLine("j="+j);

       }

   }

}

Output:

i=10

j=20

i=20

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