import Foundation protocol Animal { var binomen:String { get } init() } struct Cat: Animal { let binomen = "Felis silvestris catus" let theYoung = "kitten" } struct Dog: Animal { let binomen = "Canis lupus familiaris" let theYoung = "puppy" } var pet:Animal = (arc4random() & 1 == 1) ? Cat() : Dog() Q0: ãã®ã³ã¼ãã¯åãã¾ãã? A0: åã A1: (type mismatchã§åããªã) æ£è§£ã¯A0ããã¡ãã¨åãã¾ããPlaygroundsãªãREPLã§ç¢ºèªãã¦ã¿ã¦ãã ãããã§ãæ¬é¡ã§ãã

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