4
//
// ViewController.swift
// Is Prime
//
// Created by ZC on 16/1/9.
// Copyright © 2016年 ZC. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
@IBOutlet weak var numberTextField: UITextField!
@IBOutlet weak var result: UILabel!
@IBAction func isItPrime(sender: AnyObject) {
if let number = Int(numberTextField.text!) {
var isPrime = true
if number == 1 {
isPrime = false
} else if number == 2 {
isPrime = true
} else {
for i in 2..<number {
if number % i == 0 {
isPrime = false
}
}
}
if isPrime {
result.text = "(number) is a prime number!"
} else {
result.text = "(number) is not a prime number"
}
} else {
result.text = "Please enter a whole number"
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
项目：4_Is Prime