第三章第十一题（给出一个月的总天数）(Find the number of days in a month)
*3.11（给出一个月的总天数）编写程序，提示用户输入月份和年份，然后显示这个月的天数。例如：如果用户输入的月份是2而年份是2012，那么程序应该显示“February 2012 has 29 days”（2012年2月有29天）。如果用户输入的月份为3而年份为2015，那么程序就应该显示“March 2015 has 31 days”（2015年3月有31天）。 *3.11(Find the number of days in a month) Write a program that prompts the user to enter the month and year and displays the number of days in the month. For example, if the user entered month 2 and year 2012, the program should display that February 2012 has 29 days. If the user entered month 3 and year 2015, the program should display that March 2015 has 31 days.参考代码：
package chapter03;
import java.util.Scanner;
public class Code_11 {
public static void main(String[] args) {
int year,month;
System.out.print("Enter the month:");
Scanner input = new Scanner(System.in);
month = input.nextInt();
System.out.print("Enter the year:");
year = input.nextInt();
switch(month)
{
case 1:
System.out.println("January" + " " + year + " has 31 days");
break;
case 2:
if((year % 4 == 0 && year % 100 != 0) || year % 400 == 0)
System.out.println("February" + " " + year + " has 29 days");
else
System.out.println("February" + " " + year + " has 28 days");
break;
case 3:
System.out.println("March" + " " + year + " has 31 days");
break;
case 4:
System.out.println("April" + " " + year + " has 30 days");
break;
case 5:
System.out.println("May" + " " + year + " has 31 days");
break;
case 6:
System.out.println("June" + " " + year + " has 30 days");
break;
case 7:
System.out.println("July" + " " + year + " has 31 days");
break;
case 8:
System.out.println("August" + " " + year + " has 31 days");
break;
case 9:
System.out.println("September" + " " + year + " has 30 days");
break;
case 10:
System.out.println("October" + " " + year + " has 31 days");
break;
case 11:
System.out.println("November" + " " + year + " has 30 days");
break;
case 12:
System.out.println("December" + " " + year + " has 31 days");
break;
}
input.close();
}
}
结果显示：
Enter the month:2
Enter the year:2020
February 2020 has 29 days
Process finished with exit code 0
Processed:
0.013, SQL:
8
