Reference Parameter Example In C Sharp

This program descirbe the concept of pass by reference(Reference Parameter in C#)
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using System;

class ReferenceParameter
{
static void Main()
{
int a = 10;
Console.WriteLine("Value of a before calling method is " + a);
Console.WriteLine("--------------------");
ChangeValueMethod(ref a);
Console.WriteLine("--------------------");
Console.WriteLine("Value of a after calling method is " + a);
        }
static void ChangeValueMethod(ref int a)
{
a += 10;
Console.WriteLine("Value of a is " + a);
}
}

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Note : - While we make change in the variable value of the formal parameter they will reflect changes to the variable value of the actual parameter

Actual parameter is  :-

int a;

ChangeValueMethod(a);

Formal parmeter is   :-

static void ChangeValueMethod(int a)

 {

  a += 10;

 }

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