Value vs. Reference

I tried to develop a program to understand the concept given in the following website (http://en.csharp-online.net/Value_vs_Reference). This program is incomplete please complete this program to demonstrate the concept given in the website.

using System;

namespace Value_vs_Reference
{
class Program
{
static void Main(string[] args)
{
ReferenceType refType = new ReferenceType();
ValueType valueType = new ValueType();

refType.setR(5);
valueType.setV(10);

Console.WriteLine("{0} {1}", refType.getR(), valueType.getV());

Console.WriteLine("\nAfter assigning value");

refType.setR(6);
valueType.setV(11);

Console.WriteLine("{0} {1}", refType.getR(), valueType.getV());

Console.ReadKey();

}
}
}

class ReferenceType
{
int num;

public void setR(int num)
{
this.num = num;
}
public int getR()
{
return num;
}
}

struct ValueType
{
int num;

public void setV(int num)
{
this.num = num;
}
public int getV()
{
return num;
}

}