我不知道如何在while循環中放置此if語句

Question

我只是盯着編碼，我試圖制作一個使用戶不得不猜測特殊日子的代碼。 它正在工作，但是我嘗試通過添加while循環來提高效率，以在用戶失敗時繼續嘗試，而不必退出並重新啟動。 該代碼無需再試，而僅在用戶獲得第2個月以及高於或低於18的一天時才結束，下面是代碼：

import java.util.Scanner;

public class SpecialDay {
    public static void main(String[] args) {
        int Day, Month;

        Scanner scan = new Scanner(System.in);
        System.out.print("Welcom to the Special Day guessing game!");
        System.out.print(" Enter the Month: ");
        Month = scan.nextInt();
        System.out.print("Enter the Day: ");
        Day = scan.nextInt();

        while (Day != 18 && Month != 2) {
            System.out.print("Enter the Month: ");
            Month = scan.nextInt();
            System.out.print("Enter the Day: ");
            Day = scan.nextInt();
        }
        if (Month == 2 && Day == 18) {
            System.out.println("Nice! You got the Special Day!");
        } else if (Month >= 2 && Day > 18) {
            System.out.println("That's after the Special Day, try again!");
        } else if (Month <= 2 && Day < 18) {
            System.out.println("That's before the Special Day, try again!");
        }
    }
}

請不要討厭，我是這個新手。

Answer 1

while應該像：

while ( (Day != 18 || Month != 2) && (Day>=1 && Day<=31 && Month>=1 && Month<=12){

...編碼... }

並且還可以與do while一起使用，例如：

do{
...the code...
}while ( (Day != 18 || Month != 2) && (Day>=1 && Day<=31 && Month>=1 && Month<=12);

也可以寫成一個函數：

private boolean validateDayMonth(int Day, int Month){
    return ( (Day != 18 || Month != 2) && (Day>=1 && Day<=31 && Month>=1 && Month<=12);
}

Answer 2

就像本傑·凱斯勒（Benjy Kessler）所說的那樣，if語句必須處於while循環中。 我也修復了您的if邏輯。

while (Day != 18 || Month != 2)
{
    System.out.print ("Enter the Month: ");
    Month = scan.nextInt();
    System.out.print ("Enter the Day: ");
    Day = scan.nextInt();

    if (Month == 2 && Day == 18)
        System.out.println ("Nice! You got the Special Day!");
    else if ((Month > 2) || (Month == 2 && Day > 18))
        System.out.println ("That's after the Special Day, try again!");
    else if ((Month < 2) || (Month == 2 && Day < 18))
        System.out.println ("That's before the Special Day, try again!");
}