6.swift

// declare variables.
var today = WeatherCondition.sunny(24)
var yesterday = WeatherCondition.cloudy(Cloud.cirrus, 10)

switch today {
  case .sunny(let temperature):
    print("today's temperature is \(temperature).")
  
  case .rainy(let inchesPerHour):
    print("\(inchesPerHour) inches of rainwater.")
  
  case .cloudy(let cloudType, let windSpeed):
    switch cloudType {
      case .cirrus:
        print("it's cloudy cirrus.")
      default:
        print("somethig blah..")
    }
    print("wind speed: \(windSpeed)")
}