用户输入年月日,算出那天是该年的第多少天(完美)

最新推荐文章于 2024-06-14 23:39:45 发布

taejeoy

最新推荐文章于 2024-06-14 23:39:45 发布

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CC 4.0 BY-SA版权

文章标签： import c string class

本文链接：https://blog.youkuaiyun.com/taejeoy/article/details/2768893

本文介绍了一个简单的Java程序，该程序能够帮助用户计算特定日期是一年中的第几天。通过用户输入年份、月份和具体日期，程序将验证这些输入是否有效，并最终输出计算结果。

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import java.util.Scanner;

public class Test {
public static void main(String[] args) {
  int a, b, c, e, f, g, h, i;
  Scanner d = new Scanner(System.in);
  System.out.print("输入年份:");
  a = d.nextInt();
  if (a > 2100 || a < 1900) {
   System.out.println("您的输入超出范围!");
  }
  boolean ask = (a % 4 == 0 && a % 100 != 0 || a % 400 == 0);
  System.out.print("输入月份:");
  b = d.nextInt();
  if (b == 1 || b == 3 || b == 5 || b == 7 || b == 8 || b == 10
    || b == 12) {
   f = 31;
  } else if (b == 4 || b == 6 || b == 9 || b == 11) {
   h = 30;
  } else if (b == 2 & ask) {
   e = 29;
  } else if (b == 2) {
   i = 28;
  } else {
   System.out.println("您的输入超出范围!");
  }

  System.out.print("输入日期:");
  c = d.nextInt();
  if (c > 31 || c < 1) {
   System.out.println("您的输入超出范围!");
  }

  f = 31;
  h = 30;
  e = 29;
  i = 28;

  switch (b) {
  case 1:
   g = 0;
   break;
  case 2:
   g = f;
   break;
  case 3:
   if (ask) {
    g = f + e;
   } else {
    g = f + i;
   }
   break;
  case 4:
   if (ask) {
    g = 2 * f + e;
   } else {
    g = 2 * f + i;
   }
   break;
  case 5:
   if (ask) {
    g = 2 * f + e + h;
   } else {
    g = 2 * f + i + h;
   }
   break;
  case 6:
   if (ask) {
    g = 3 * f + e + h;
   } else {
    g = 3 * f + i + h;
   }
   break;
  case 7:
   if (ask) {
    g = 3 * f + e + 2 * h;
   } else {
    g = 3 * f + i + 2 * h;
   }
   break;
  case 8:
   if (ask) {
    g = 4 * f + e + 2 * h;
   } else {
    g = 4 * f + i + 2 * h;
   }
   break;
  case 9:
   if (ask) {
    g = 5 * f + e + 2 * h;
   } else {
    g = 5 * f + i + 2 * h;
   }
   break;
  case 10:
   if (ask) {
    g = 5 * f + e + 3 * h;
   } else {
    g = 5 * f + i + 3 * h;
   }
   break;
  case 11:
   if (ask) {
    g = 6 * f + e + 3 * h;
   } else {
    g = 6 * f + i + 3 * h;
   }
   break;
  case 12:
   if (ask) {
    g = 6 * f + e + 4 * h;
   } else {
    g = 6 * f + i + 4 * h;
   }
   break;
  default:
   g = 0;
  }
  if ((a > 2100 || a < 1900) || (b > 12 || b < 1) || (c > 31 || c < 1)) {
   System.out.println("/n说你不对就是不对!");
  } else if ((b == 2 && ask && c > 29) || (b == 2 && (!(ask)) && c > 28)) {
   System.out.println("您的输入超出范围!");
   System.out.println("/n说你不对就是不对!");
  } else {
   System.out.println("/n您选择的日期是一年中的第" + (g + c) + "天");
  }
}
}