static void Main(string[] args)
{
#region abstract example
////var vehicle = new Vehicle();
Vehicle car = new Car();
Vehicle bike = new MotorBike();
car.Gas();
bike.Gas();
car.SwitchGear();
bike.SwitchGear();
Console.WriteLine();
#endregion
#region override virtual new
Singer bariton = new Bariton();
bariton.Sing();
Singer tenor = new Tenor();
tenor.Sing();
Console.WriteLine();
#endregion
#region avoid if else
List <Employee> employees = new List <Employee> {
new Developer(), new Tester(), new Manager(), new Developer()
};
foreach (var employee in employees)
{
var sallary = employee.GetSallary();
if (employee is Tester)
{
sallary *= 1.5;
}
else if (employee is Developer)
{
sallary *= 2;
}
else if (employee is Manager)
{
sallary *= 10;
}
Console.WriteLine("{0} sallary: {1}", employee.ToString(), sallary);
}
Console.WriteLine();
#endregion
}