我是Java的新手，我遇到了这个特殊的for循环问题。每次我运行循环并输入一个不是1或2的数字时，循环显示：“请选择正确的选项”。可能是什么原因造成的？
print("you win")答案 0 :(得分：-1)
选项变量未获得您希望它保持的正确值。
通过查看您的代码，用户可以输入1或2，然后您尝试将其转换为问题所在的字符。尝试将int作为输入
import UIKit
import os.log
class Season: NSObject, NSCoding {
//MARK: Properties
var name: String
var detail: String
//MARK: Archiving Paths
static let DocumentsDirectory = FileManager().urls(for: .documentDirectory, in: .userDomainMask).first!
static let ArchiveURL = DocumentsDirectory.appendingPathComponent("season")
//MARK: Types
struct PropertyKey {
static let name = "name"
static let detail = "detail"
}
//MARK: Initialization
init?(name: String, detail: String) {
guard !name.isEmpty else {
return nil
}
guard !detail.isEmpty else {
return nil
}
// Initialize stored properties
self.name = name
self.detail = detail
}
//MARK: NSCoding
func encode(with aCoder: NSCoder) {
aCoder.encode(name, forKey: PropertyKey.name)
aCoder.encode(detail, forKey: PropertyKey.detail)
}
required convenience init?(coder aDecoder: NSCoder) {
// the name is required. If we cannnot get a name string, the initializer should fail.
guard let name = aDecoder.decodeObject(forKey: PropertyKey.name) as? String
else {
os_log("Unable to decode the name for a Season object.", log: OSLog.default, type: .debug)
return nil
}
let detail = aDecoder.decodeObject(forKey: PropertyKey.detail)
self.init(name: name, detail: detail as! String)
}
}