using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace HW1
{
class HW1
{
static void Main(string[] args)
{
int questionNum;
while (true)
{
Console.Clear();
Console.WriteLine("請輸入題號(1)~(6)，離開請按0");
Console.WriteLine("(1)三位數符合阿姆斯壯數");
Console.WriteLine("(2)輸入一個西元年份，判斷其為閏年或平年。");
Console.WriteLine("(3)輸入一個西元年份及月份，印出該月的天數。");
Console.WriteLine("(4)輸入年、月、日，印出該日是星期幾。");
Console.WriteLine("(5)輸入年、月、日，判斷該日是否合法。");
Console.WriteLine("(6)輸入起始年、月、日以及結束年、月、日，印出這兩個日期之間有多少日。");
questionNum = int.Parse(Console.ReadLine());
Console.WriteLine("--------------------");
switch (questionNum)
{
case 0:
break;
case 1:
HW1.Question_1();
break;
case 2:
HW1.Question_2();
break;
case 3:
HW1.Question_3();
break;
case 4:
HW1.Question_4();
break;
case 5:
HW1.Question_5();
break;
case 6:
HW1.Question_6();
break;
default:
Console.WriteLine("輸入錯誤");
break;
}
Console.ReadKey();
}
}
static void Question_1()
{
int a;
int b;
int c;
for (int i = 100; i <= 999; i++)
{
c = i % 10;//個位數
b = (i % 100) / 10;
a = i / 100;
if (a * a * a + b * b * b + c * c * c == i)
{
Console.WriteLine("{0}\n", i);
}
}
}
static void Question_2()
{
int year;
while (true)
{
Console.WriteLine("請輸入年分:");
year = int.Parse(Console.ReadLine());
if (year < 0)
break;
else
{
if (year % 4 != 0 || ((year % 100 == 0) && (year % 400 != 0)))
Console.WriteLine("{0}是平年\n", year);
else
Console.WriteLine("{0}是閏年\n", year);
}
}
}
static void Question_3()
{
int year;
int month;
Console.WriteLine("題目:輸入一個西元年份及月份，印出該月的天數。");
Console.WriteLine("輸入西元年份:");
year = int.Parse(Console.ReadLine());
Console.WriteLine("輸入月份:");
month = int.Parse(Console.ReadLine());
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
Console.WriteLine("西元{0}年{1}月有 31 天。", year, month);
break;
case 4:
case 6:
case 9:
case 11:
Console.WriteLine("西元{0}年{1}月有 30 天。", year, month);
break;
case 2:
if (year % 4 != 0 || ((year % 100 == 0) && (year % 400 != 0)))
Console.WriteLine("西元{0}年{1}月有 28 天。\n", year, month); //平年
else
Console.WriteLine("西元{0}年{1}月有 29 天。\n", year, month); //閏年
break;
default:
Console.WriteLine("輸入錯誤");
break;
}
}
static void Question_4()
{
int centry;
int year;
int month;
int day;
int NumOfDate;
int yearOf2;
while (true)
{
Console.WriteLine("題目:輸入年、月、日，印出該日是星期幾。(日期須為1582年10月15日之後)");
Console.WriteLine("輸入年份");
year = int.Parse(Console.ReadLine());
if (year < 1593)
{
Console.WriteLine("輸入錯誤");
continue;
}
Console.WriteLine("輸入月份:");
month = int.Parse(Console.ReadLine());
if (month > 12 || month < 1)
{
Console.WriteLine("輸入錯誤");
continue;
}
Console.WriteLine("請輸日:");
day = int.Parse(Console.ReadLine());
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
if (day > 31||day<0)
{
Console.WriteLine("輸入錯誤");
continue;
}
break;
case 4:
case 6:
case 9:
case 11:
if (day > 30||day<0)
{
Console.WriteLine("輸入錯誤");
continue;
}
break;
case 2:
if (year % 4 != 0 || ((year % 100 == 0) && (year % 400 != 0)))//平年
{
if (day > 28||day<0)//平年
{
Console.WriteLine("輸入錯誤");
continue;
}
break;
}
else
{
if (day > 29||day<0)//閏年
{
Console.WriteLine("輸入錯誤");
continue;
}
break;
}
default:
Console.WriteLine("輸入錯誤");
break;
}
if (month == 1 || month == 2)
{
month = month + 12;
year = year - 1;
}
//yearOf2 是年份的末兩位(ex:19XX)。
// NumOfDate 用來計算星期幾的參數。
//centry 是年份的前兩位(ex:XX38)。
//計算星期幾的公式。
centry = (year / 100);
yearOf2 = year%100;
NumOfDate = yearOf2 + (yearOf2 / 4) + (centry / 4) - (2 * centry) + (26 * (month + 1) / 10) + day - 1;
if (month == 13 || month == 14)
{
month = month - 12;
year = year + 1;
}
switch(NumOfDate%7)
{
case 1:
Console.WriteLine("{0}年{1}月{2}日為星期一",year,month,day);
break;
case 2:
Console.WriteLine("{0}年{1}月{2}日為星期二", year, month, day);
break;
case 3:
Console.WriteLine("{0}年{1}月{2}日為星期三", year, month, day);
break;
case 4:
Console.WriteLine("{0}年{1}月{2}日為星期四", year, month, day);
break;
case 5:
Console.WriteLine("{0}年{1}月{2}日為星期五", year, month, day);
break;
case 6:
Console.WriteLine("{0}年{1}月{2}日為星期六", year, month, day);
break;
case 7:
Console.WriteLine("{0}年{1}月{2}日為星期日", year, month, day);
break;
}
break;
}
}
static void Question_5()
{
int year;
int month;
int day;
Console.WriteLine("題目:輸入年、月、日，判斷該日是否合法，");
Console.WriteLine("輸入年份");
year = int.Parse(Console.ReadLine());
Console.WriteLine("輸入月份:");
month = int.Parse(Console.ReadLine());
Console.WriteLine("請輸日:");
day = int.Parse(Console.ReadLine());
if (month > 12 || month < 0||year<0)
Console.WriteLine("{0}年{1}月{2}日為不合法日子",year ,month,day);
switch (month)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
if (day > 31 || day < 0)
Console.WriteLine("{0}年{1}月{2}日為不合法日子", year, month, day);
else
Console.WriteLine("{0}年{1}月{2}日為合法日子", year, month, day);
break;
case 4:
case 6:
case 9:
case 11:
if (day > 30 || day < 0)
Console.WriteLine("{0}年{1}月{2}日為不合法日子", year, month, day);
else
Console.WriteLine("{0}年{1}月{2}日為合法日子", year, month, day);
break;
case 2:
if (year % 4 != 0 || ((year % 100 == 0) && (year % 400 != 0)))//平年
{
if (day > 28 || day < 0)//平年
Console.WriteLine("{0}年{1}月{2}日為不合法日子", year, month, day);
else
Console.WriteLine("{0}年{1}月{2}日為合法日子", year, month, day);
break;
}
else
{
if (day > 29 || day < 0)//閏年
Console.WriteLine("{0}年{1}月{2}日為不合法日子", year, month, day);
else
Console.WriteLine("{0}年{1}月{2}日為合法日子", year, month, day);
break;
}
default:
Console.WriteLine("{0}年{1}月{2}日為不合法日子", year, month, day);
break;
}
}
static void Question_6()
{
//用來暫存的年月日。
int temptYear;
int temptMonth;
int temptDay;
//起始的年月日。
int startYear;
int startMonth;
int startDay;
//終止的年月日。
int endYear;
int endMonth;
int endDay;
int countDays= 0;
Console.WriteLine("計算兩個日期之間有多少天。");
Console.WriteLine("請輸入起始年分:");
startYear = int.Parse(Console.ReadLine());
temptYear = startYear;
Console.WriteLine("請輸入起始月分:");
startMonth = int.Parse(Console.ReadLine());
temptMonth = startMonth;
Console.WriteLine("請輸入起始日:");
startDay = int.Parse(Console.ReadLine());
temptDay = startDay;
Console.WriteLine("請輸入終止年分:");
endYear = int.Parse(Console.ReadLine());
Console.WriteLine("請輸入終止月分:");
endMonth = int.Parse(Console.ReadLine());
Console.WriteLine("請輸入終止日:");
endDay = int.Parse(Console.ReadLine());
while (true)
{
//如果起始日大於終止日
//此方法沒有判斷不合法日子
if (startYear > endYear || (startYear == endYear && startMonth > endMonth)||(startYear == endYear && startMonth == endMonth && startDay > endDay))
{
Console.WriteLine("輸入錯誤");
break;
}
temptDay++;
if (temptMonth == 1 || temptMonth == 3 || temptMonth == 5 || temptMonth == 7 || temptMonth == 8 || temptMonth == 10 || temptMonth == 12)
{
if (temptDay > 31)
{
temptDay = 1;
temptMonth++;
}
}
else if (temptMonth == 4 || temptMonth == 6 || temptMonth == 9 || temptMonth == 11)
{
if (temptDay > 30)
{
temptDay = 1;
temptMonth++;
}
}
else if (temptMonth == 2)
{
//平年
if (temptYear % 4 != 0 || ((temptYear % 100 == 0) && (temptYear % 400 != 0)))
//Console.WriteLine("{0}是平年\n", year);
if (temptDay > 28)
{
temptDay = 1;
temptMonth++;
}
else
//閏年
//Console.WriteLine("{0}是閏年\n", year);
if (temptDay > 29)
{
temptDay = 1;
temptMonth++;
}
}
if (temptMonth > 12)
{
temptMonth = 1;
temptYear++;
}
if (temptYear == endYear && temptMonth == endMonth && temptDay == endDay)
break;
countDays++;
}
Console.WriteLine("{0}/{1}/{2}~~~{3}/{4}/{5}有{6}天", startYear, startMonth, startDay, endYear, endMonth, endDay, countDays);
Console.ReadKey();
}
}
}
2015年3月19日 星期四
[2015][Homework]Team04 - Hw01 (Revised)
Hw01 (Revised)
變數命名更改，增加變數註解。
訂閱：
張貼留言 (Atom)
1. NumOfDate ==>numOfDate
回覆刪除2. yearOf2 命名有點怪
3. day>31 || day <1 是不合法的判斷 應該可以拿到 case switch 外判斷