medium_patmatch_case_study.cs

abstract class Coin
{
  public float GetValue()
  {
    return this switch
    {
      Penny => 0.01,
      Nickel => 0.05,
      Dime => 0.10,
      Quarter => 0.25,
    };
  }
}

class Penny : Coin {}
class Nickel : Coin {}
class Dime : Coin {}
class Quarter : Coin {}