java 输入生日判断年龄星期几距今天数

灰太狼 2022-06-17 08:17 380阅读 0赞

package com.minrisoft;  
import java.lang.String;  
import java.util.Scanner;  
public class Riqi \{  
public static boolean leapYear(int y)\{  
if (y % 400 == 0 || (y % 4 == 0 && y % 100 != 0))  
return true;  
else  
return false;  
\}  
public static void calcWeek(int a,int b,int c)\{  
if(b == 1)\{  
b = 13;  
a =a - 1;  
\}  
if(b ==12)\{  
b = 14;  
a = a - 1;  
\}  
int h = (int) ((c + (26 \* (b + 1) / 10) + (a % 100) + ((a % 100) / 4) + ((a / 100) / 4) + 5 \* (a / 100)) % 7);  
switch (h) \{  
case 0:  
System.out.println("星期六");  
break;  
case 1:  
System.out.println("星期天");  
break;  
case 2:  
System.out.println("星期一");  
break;  
case 3:  
System.out.println("星期二");  
break;  
case 4:  
System.out.println("星期三");  
break;  
case 5:  
System.out.println("星期四");  
break;  
case 6:  
System.out.println("星期五");  
break;  
\}  
\}  
public static int countDay(int y, int m, int d)\{  
int month\_1\[\] =\{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 \};  
int month\_2\[\] =\{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 \};  
int count = 0;  
do \{  
count += 365;  
if (leapYear(y) == true)  
count += 1;  
\}while((--y)!= 0);  
do\{  
if (leapYear(y) == true)  
count += month\_1\[m-1\];  
else  
count += month\_2\[m-1\];  
\}while ((--m)!= 0);  
count += d;  
return count;  
\}  
public static void main(String \[\] args)\{  
Scanner sc = new Scanner(System.in);  
System.out.print("请输入日期（格式：yymmdd）:");  
String y\_m\_d\_1 = sc.nextLine();  
sc.close();  
int x =Integer.parseInt(y\_m\_d\_1.substring(0,4));  
int y =Integer.parseInt(y\_m\_d\_1.substring(4,6));  
int z =Integer.parseInt(y\_m\_d\_1.substring(6,8));  
if (y >= 1 && y <= 12 && z >= 1 && z <= 31)\{  
if (y == 4 || y == 6 || y == 9 || y == 11)\{  
if (z > 30)\{  
System.out.println("输入错误");  
return;  
\}  
\}  
if (y == 2)\{  
if (leapYear(y) == true)\{  
if (z > 29)\{  
System.out.println("输入错误");  
return;  
\}  
\}  
else\{  
if (z > 28)\{  
System.out.println("输入错误");  
return;  
\}  
\}  
\}  
\}  
else\{  
System.out.println("输入错误");  
return;  
\}  
System.out.println(x + "年" + y + "月" + z + "日:输入正确");  
  
int year\_1 = countDay(x,y,z);  
int year\_2 = countDay(2017,04,21);  
calcWeek(x,y,z);  
if (year\_1 == year\_2)  
System.out.println("处于今天");  
if (year\_1 < year\_2)  
System.out.println("距离" + (year\_2 - year\_1) + "天");  
if (year\_1 > year\_2)\{  
System.out.println("距离" + (year\_1 - year\_2) + "天");  
System.out.println(x + "年" + y + "月" + z + "日:没有出生");  
\}  
else\{  
int n = 2017 - x;  
if (y > 4 || (x != 2017 && y == 4 && z > 21))  
n -= 1;  
System.out.println("今年"+ n + "岁");  
\}  
\}  
\}