目前，如果有人輸入超出范圍的日期，則會導致else語句運行，這一切都很好，但我希望if-else語句運行時，它會重新運行if語句。我真的不知道我應該做什么，所以任何幫助將不勝感激！import java.util.Scanner;public class Horoscope { public Horoscope() { Scanner sc = new Scanner(System.in); String output = "Please enter a valid date"; int month; int day; System.out.println("What is your month of birth?"); month = sc.nextInt(); System.out.println("What is your day of birth?"); day = sc.nextInt(); if((month == 3 && day >= 20 && day <= 31) || (month == 4 && day >= 1 && day <= 19)) { System.out.println("You are an Aries"); } else if((month == 4 && day >= 20 && day <= 30) || (month == 5 && day >= 1 && day <= 20)) { System.out.println("You are a Taurus"); } else if((month == 5 && day >= 21 && day <= 31) || (month == 6 && day >= 1 && day <= 20)) { System.out.println("You are a Gemini"); } else if((month == 6 && day >= 21 && day <= 30) || (month == 7 && day >= 1 && day <= 22)) { System.out.println("You are a Cancer"); } else if((month == 7 && day >= 23 && day <= 31) || (month == 8 && day >= 1 && day <= 22)) { System.out.println("You are a Leo"); } else if((month == 8 && day >= 23 && day <= 31) || (month == 9 && day >= 1 && day <= 22)) { System.out.println("You are a Virgo"); } else if((month == 9 && day >= 23 && day <= 30) || (month == 10 && day >= 1 && day <= 22)) { System.out.println("You are a Libra"); } else if((month == 10 && day >= 23 && day <= 30) || (month == 11 && day >= 1 && day <= 21)) { System.out.println("You are a Scorpio"); } else if((month == 11 && day >= 22 && day <= 31) || (month == 12 && day >= 1 && day <= 21)) { System.out.println("You are a Sagittarius"); } } }}
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BIG陽
TA貢獻1859條經驗 獲得超6個贊
import java.util.Scanner;
public class test {
public test() {
Scanner sc = new Scanner(System.in);
String output = "Please enter a valid date";
int month;
int day;
int k = 0;
// you can use do while loop. write some flag logic like I created k variable and it will be checked in while block
do {
System.out.println("What is your month of birth?");
month = sc.nextInt();
System.out.println("What is your day of birth?");
day = sc.nextInt();
if ((month == 3 && day >= 20 && day <= 31) || (month == 4 && day >= 1 && day <= 19)) {
System.out.println("You are an Aries");
} else if ((month == 4 && day >= 20 && day <= 30) || (month == 5 && day >= 1 && day <= 20)) {
System.out.println("You are a Taurus");
} else if ((month == 5 && day >= 21 && day <= 31) || (month == 6 && day >= 1 && day <= 20)) {
System.out.println("You are a Gemini");
} else if ((month == 6 && day >= 21 && day <= 30) || (month == 7 && day >= 1 && day <= 22)) {
System.out.println("You are a Cancer");
} else if ((month == 7 && day >= 23 && day <= 31) || (month == 8 && day >= 1 && day <= 22)) {
System.out.println("You are a Leo");
} else if ((month == 8 && day >= 23 && day <= 31) || (month == 9 && day >= 1 && day <= 22)) {
System.out.println("You are a Virgo");
} else if ((month == 9 && day >= 23 && day <= 30) || (month == 10 && day >= 1 && day <= 22)) {
System.out.println("You are a Libra");
} else if ((month == 10 && day >= 23 && day <= 30) || (month == 11 && day >= 1 && day <= 21)) {
System.out.println("You are a Scorpio");
} else if ((month == 11 && day >= 22 && day <= 31) || (month == 12 && day >= 1 && day <= 21)) {
System.out.println("You are a Sagittarius");
} else if ((month == 12 && day >= 22 && day <= 31) || (month == 1 && day >= 1 && day <= 19)) {
System.out.println("You are a Capricorn");
} else if ((month == 1 && day >= 20 && day <= 31) || (month == 2 && day >= 1 && day <= 18)) {
System.out.println("You are an Aquarius");
} else if ((month == 2 && day >= 19 && day <= 29) || (month == 3 && day >= 1 && day <= 20)) {
System.out.println("You are a Pisces");
} else {
System.out.println(output);
k = 1;
}
} while (k == 1);
}
}
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