程序每一年每个月有多少天

Ⅰ java程序一年里一个月有多少天

package Day02;
import java.util.Scanner;
public class YearandMonth {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.println("请输入年份>");
int year = scan.nextInt();
System.out.println("请输入月份");
int month = scan.nextInt();
if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12){
System.out.println("该月份有31天");
}else if (month == 2){
if(year % 4 == 0 && year % 100 != 0 || year % 400 == 0){
System.out.println("该月份有29天");
}else{
System.out.println("该月份有28天");
}
}else if (month == 4 || month == 6 || month == 9 || month == 11){
System.out.println("该月份有30天");
}else{
System.out.println("没有该月份");
}

}
}

Ⅱ c语言编写程序从键盘输入年份和月份，计算出这一年的这一个月有多少天

#include<stdio.h>

int main()

{

int year,month,days,day;

printf("请输入年月日");

scanf("%d-%d-%d",&year,&month,&days);

switch(month)

{

case 1:

case 3:

case 5:

case 7:

case 8:

case 10:

case 12: day=31;break;

case 4:

case 6:

case 9:

case 11:day=30;break;

case 2:

if(year%4==0&&year%100!=0||year%400==0)

day=29;

else

day=28;break;

default :printf("error ");

}

printf("这个月有%d天",day);

}