第十四节 流程控制四

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace bianli
{
    class Program
    {
        static void Main(string[] args)
        {
            double y = Convert.ToDouble(Console.ReadLine());
            int m = Convert.ToInt32(Console.ReadLine());
            double d = Convert.ToDouble(Console.ReadLine());

            double total = 365;
            if(y%4==0&&y%100!=0||y%400==0)
            {
                total=366;
            }
            switch (m)
            {
                case 1: total -= 31; goto case 2;
                case 2:
                    if (y % 4 == 0 && y % 100 != 0 || y % 400 == 0)
                    {
                        total -= 29;
                    }
                    else
                        total -= 28;
                    goto case 3;
               
                case 3: total -= 31; goto case 4;
                case 4: total -= 30; goto case 5;
                case 5: total -= 31; goto case 6;
                case 6: total -= 30; goto case 7;
                case 7: total -= 31; goto case 8;
                case 8: total -= 31; goto case 9;
                case 9: total -= 30; goto case 10;
                case 10: total -= 31; goto case 11;
                case 11: total -= 30; goto case 12;
                case 12: total -= 31; goto default;
                default: total += d; break;
            }
            Console.WriteLine("{0}年{1}月{2}日是{3}天",y,m,d,total);
        }
    }
}

　　三木运算符？：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace sz
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("输入一个大写字母");
            char ch = Convert.ToChar(Console.Read());
            ch = (char.IsUpper(ch)) ?char.ToLower(ch) : ch;
            Console.WriteLine(ch);
        }
    }
}

　　

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace paixu
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("我们输入三个数");
            double a = Convert.ToDouble(Console.ReadLine());
            double b = Convert.ToDouble(Console.ReadLine());
            double c = Convert.ToDouble(Console.ReadLine());
            double temp;
            if (a < b)
            {
                temp = a;
                a = b;
                b = temp;
            }
            if (a < c)
            {
                temp = a;
                a = c;
                c = temp;
            }
                if (b < c)
                {
                    temp = b;
                    b = c;
                    c = temp;
                }
                Console.WriteLine("{0}{1}{2}",a,b,c);
            }
        }
    }