<分区>
<分区>
我的问题是我尝试制作一个计算器，但由于预期的声明问题我没有这样做。我检查了有关预期声明的其他问题，但我没有解决这个问题。
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var Screen: UILabel!
var firstNumber = Int()
var secondNumber = Int()
var isTypingNumber = false
var result = Int()
var operation = ""
@IBAction func number(sender: AnyObject) {
let number = sender.currentTitle
if isTypingNumber == true {
Screen.text = Screen.text! + number!!
} else {
Screen.text = number;
}
isTypingNumber = true
}
@IBAction func operation(sender: AnyObject) {
isTypingNumber = false
firstNumber = Int(Screen.text!)!
operation = sender.currentTitle!!
}
@IBAction func equals(sender: AnyObject) {
secondNumber = Int(Screen.text!)!
if operation == "+" {
result = firstNumber + secondNumber
} else if operation == "-" {
result = firstNumber - secondNumber
} else if operation == "x" {
result = firstNumber * secondNumber
}else {
result = firstNumber / secondNumber
}
Screen.text = "\(result)"
func clear(sender: AnyObject) {
firstNumber = 0
secondNumber = 0
isTypingNumber = false
result = 0
Screen.text = "\(result)"
}
func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
最佳答案
您的 equals 函数中缺少右大括号:
@IBAction func equals(sender: AnyObject) {
secondNumber = Int(Screen.text!)!
if operation == "+" {
result = firstNumber + secondNumber
} else if operation == "-" {
result = firstNumber - secondNumber
} else if operation == "x" {
result = firstNumber * secondNumber
}else {
result = firstNumber / secondNumber
}
Screen.text = "\(result)"
} // missing this
关于ios - 预期申报错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34877442/