Java编程题练习2017-02-18
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2017-02-18题目:输入某年某月某日,判断这一天是这一年的第几天?
import java.util.Scanner;
public class ru20170218 {
public static void main(String[] args) { // TODO Auto-generated method stub int y,m,d; int sum=0; int feb=28; Scanner in = new Scanner(System.in); System.out.print("请输入年份:"); y = in.nextInt(); System.out.print("请输入月份:"); m = in.nextInt(); System.out.print("请输入几号:"); d = in.nextInt(); if((y%4==0 && y%100!=0) || y%400==0) { feb = 29; } switch(m) { case 1: sum = d; break; case 2: sum = 31 + d; break; case 3: sum = 31+feb+d; break; case 4: sum = 31+feb+31+d; break; case 5: sum = 31+feb+31+30+d; break; case 6: sum = 31+feb+31+30+31+d; break; case 7: sum = 31+feb+31+30+31+30+d; break; case 8: sum = 31+feb+31+30+31+30+31+d; break; case 9: sum = 31+feb+31+30+31+30+31+31+d; break; case 10: sum = 31+feb+31+30+31+30+31+31+30+d; break; case 11: sum = 31+feb+31+30+31+30+31+31+30+31+d; break; case 12: sum = 31+feb+31+30+31+30+31+31+30+31+30+d; } System.out.println(y+" 年 "+m+" 月 " + d + "号是今年的第"+sum+"天"); }
}
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