public SwitchBoardSimulator()
{
string NoOfFan, NoOfAC, NoOfBulb;
do
{
Console.WriteLine("Enter the numberof Fan : ");
NoOfFan = Console.ReadLine();
}while(!IsValidNumber(NoOfFan));
do
{
Console.WriteLine("Enter the numberof AC : ");
NoOfAC = Console.ReadLine();
}while(!IsValidNumber(NoOfAC));
do
{
Console.WriteLine("Enter the numberof Bulb : ");
NoOfBulb = Console.ReadLine();
}while(!IsValidNumber(NoOfBulb));
switchBoard = new SwitchBoard(int.Parse(NoOfFan), int.Parse(NoOfAC), int.Parse(NoOfBulb));
}