import java.util.Scanner;
/**
* 給定一個日期,求後一天的日期
*
* @author lm吹夢到西洲
* @date 2018/5/6
*
*/
public class NextDate {
int year, month, day;
public void getDay(int year, int month, int day) {
this.year = year;
this.month = month;
this.day = day;
switch (month) {
case 1:
case 3:
case 5:
case 7:
case 9:
case 11:
if (day < 1 || day > 31) {
System.out.println("天數在1-31之間!");
System.exit(0);
} else if (day <= 30) {
day++;
} else if (day == 31) {
month++;
day = 1;
}
System.out.println(year + "/" + month + "/" + day);
break;
case 12:
if (day < 1 || day > 31) {
System.out.println("天數在1-31之間!");
System.exit(0);
} else if (day <= 30) {
day++;
} else if (day == 31) {
year++;
month = 1;
day = 1;
}
System.out.println(year + "/" + month + "/" + day);
break;
case 4:
case 6:
case 8:
case 10:
if (day < 1 || day > 30) {
System.out.println("天數在1-30之間!");
System.exit(0);
} else if (day <= 29) {
day++;
} else if (day == 30) {
month++;
day = 1;
System.out.println(year + "/" + month + "/" + day);
}
break;
case 2:
if (day < 1 || day > 29) {
System.out.println("天數在1-29之間!");
System.exit(0);
} else if (day <= 27) {
day++;
} else if (day == 28) {
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
day++;
} else {
month++;
day = 1;
}
} else if (day == 29) {
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
month++;
day = 1;
} else {
System.out.println("平年2月沒有29天!");
System.exit(0);
}
}
System.out.println(year + "/" + month + "/" + day);
break;
default:
System.out.println("月數在1-12之間!");
}
}
}
class Test {
public static void main(String[] args) {
NextDate a = new NextDate();
Scanner date = new Scanner(System.in);
System.out.println("請輸入年份:");
int year = date.nextInt();
System.out.println("請輸入月份:");
int month = date.nextInt();
System.out.println("請輸入天數:");
int day = date.nextInt();
System.out.println("您輸入的日期爲:" + year + "/" + month + "/" + day);
System.out.print("後一天的日期爲:");
a.getDay(year, month, day);
}
}
2018
5
請輸入天數:
6
您輸入的日期爲:2018/5/6
後一天的日期爲:2018/5/7
------------------------------------------
2008
請輸入月份:
2
請輸入天數:
29
您輸入的日期爲:2008/2/29
後一天的日期爲:2008/3/1
--------------------------------------------
2009
請輸入月份:
2
請輸入天數:
29
您輸入的日期爲:2009/2/29
後一天的日期爲:平年2月沒有29天!