• 第三天学习内容 if--else


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

    namespace day03
    {
        class Program
        {
            static void Main(string[] args)
            {
                /*   int x = Convert.ToInt32(Console.ReadLine());
                  // Console.WriteLine(x == 0 ? "x=0" : "x!=0");
                   if (x==0)
                   {
                       Console.WriteLine("x=0");
                   }
                   else
                   {
                       Console.WriteLine("x!=0");
                   }
                   Console.ReadKey();

                //分数的分类
                   Console.WriteLine("请输入姓名");
                   Console.ReadLine();
                   Console.WriteLine("请输入分数");
                   double a = Convert.ToDouble(Console.ReadLine());
                   if (a<50&&a>0)
                   {
                       Console.WriteLine("使劲努力,不要偷懒");

                   }
                   else if (a >= 50 && a < 60)
                   {
                       Console.WriteLine("就差一点点,再加把劲");
                   }
                   else if (a>=60&&a<=100)
                   {
                       Console.WriteLine("恭喜你及格了");
                       if (a>80)
                       {
                           Console.WriteLine("你学的不错值得表扬!");
                       }
                   
                   }
                   else
                       {
                           Console.WriteLine("您输入的分数有误");
                       }
                   Console.ReadKey();


                //标准体重的计算
                   Console.WriteLine("请输入性别");
                   string a=Console.ReadLine();
                   Console.WriteLine("请输入体重");
                   double b = Convert.ToDouble(Console.ReadLine());
                   Console.WriteLine("请输入身高");
                   double c = Convert.ToDouble(Console.ReadLine());
                   double d;
                   if (a=="男")
                   {
                       d = b - c + 100;
                   }
                   else
                   {
                       d = b - c + 110;
                   }
                   if (d>3)
                   {
                       Console.WriteLine("您超重了");
                   }
                   else if (d<-3)
                   {
                       Console.WriteLine("您需要增加营养");
                   }
                   else
                   {
                       Console.WriteLine("您的体重为标准体重");
                   }
                   Console.ReadKey();

             
                    //闰年的算法1
                   Console.WriteLine("请输入一个年份");
                   int y = Convert.ToInt32(Console.ReadLine());
                   if ((y%4==0&&y%100!=0)||y%400==0)
                   {
                       Console.WriteLine(y + "年2月29日存在");
                   
                   }
                   else
                   {
                       Console.WriteLine(y + "年2月29日不存在");
                   }
                   Console.ReadKey();
                //算法2
                   Console.WriteLine("请输入年份");
                   int y = Convert.ToInt32(Console.ReadLine());
                   if (y % 4!= 0)
                   {
                       Console.WriteLine("该年份不是闰年");
                   }
                   else
                   {
                       if (y%100 !=0)
                       {
                           Console.WriteLine("该年份是闰年");
                       }
                       else if (y%400!=0)
                       {
                           Console.WriteLine("该年份不是闰年");
                       }
                       else
                       {
                           Console.WriteLine("该年份是闰年");
                       }

                   }
                   Console.ReadKey();

                 *
                 *   //结婚的例子1
                Console.WriteLine("你有房吗");
                string a = Console.ReadLine();
                if (a=="有")
                {
                    Console.WriteLine("你有车吗");
                    string b = Console.ReadLine();
                    if (b=="有")
                    {
                        Console.WriteLine("你有钱吗");
                       string c = Console.ReadLine();
                        if (c=="有")
                    {
                        Console.WriteLine("我们结婚吧");
                    }
                    else
                    {
                        Console.WriteLine("以后要好好工作努力赚钱");
                    }
                    }
                    else
                    {
                        Console.WriteLine("抓紧时间给我买辆车");
                    }
                 

                }
                else
                {
                    Console.WriteLine("慢走不送");
                }
                Console.ReadKey();
            }
                 *
                 *
                //例子2
                 

               
                   Console.ReadKey();

                //输出三个数中最大的数
                   Console.WriteLine("请输入三个数");
                   int a, b, c,d;
                   a = Convert.ToInt32(Console.ReadLine());
                   b = Convert.ToInt32(Console.ReadLine());
                   c = Convert.ToInt32(Console.ReadLine());
                   if (a>b&&a>c)
                   {
                       d = a;
                   }
                   else if (b > a && b > c)
                   {
                       d = b;
                   }
                   else
                   {
                       d = c;
                   }
                   Console.WriteLine("最大的数是" + d);
                   Console.ReadKey();

               


                Console.WriteLine("请选择7以内的一个数");
                int a = Convert.ToInt32(Console.ReadLine());
                string x;
                switch (a)
                {
                    case 1:
                        x = "选择的是星期一";
                        break;
                    case 2:
                        x = "选择的是星期二";
                        break;
                    case 3:
                        x = "选择的是星期三";
                        break;
                    case 4:
                        x = "选择的是星期四";
                        break;
                    case 5:
                        x = "选择的是星期五";
                        break;
                    case 6:
                        x = "选择的是星期六";
                        break;
                    case 7:
                        x = "选择的是星期天";
                        break;
                    default:
                        x = "选择的是默认";
                        break;
                }
                Console.WriteLine(x);
                Console.ReadKey();
                */

                //猜拳的算法         
                Random r = new Random();
                string x, y;
                int a = r.Next(0, 3);
                int b = r.Next(0, 3);
                switch (a)
                {
                    case 0:
                        x = "剪刀";
                        break;
                    case 1:
                        x = "石头";
                        break;
                    case 2:
                        x = "布";
                        break;
                    default:
                        x = "耍赖";
                        break;
                }
                switch (b)
                {
                    case 0:
                        y = "剪刀";
                        break;
                    case 1:
                        y = "石头";
                        break;
                    case 2:
                        y = "布";
                        break;
                    default:
                        y = "耍赖";
                        break;
                }
                Console.WriteLine("x出的是" + x);
                Console.WriteLine("y出的是" + y);
                string jg = "";
                if (a == b)
                {
                   jg="平局";

                }
                else if (a>b)                    
                {
                   
                   
                        if (a==2&&b==0)
                        {
                           jg="y胜利";
                         }
                    else
                      {
                            jg="x胜利";
                       }
                                                                                 
                       
                 }

                    else  if (b>a)
                    {
                        if (a==0&&b==2)
                    {
                         jg="x胜利";
      
                    }
                        else
                        {
                          jg="y胜利";
                        }
                    }
                   
                Console.WriteLine(jg);
                Console.ReadKey();

                }
          
            }
        }

  • 相关阅读:
    linux文件上传
    ios base64图片上传失败问题
    ERROR 1267 (HY000): Illegal mix of collations (utf8_general_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation '='
    配置SQL Server 2012 AlwaysOn ——step3 配置数据库
    配置SQL Server 2012 AlwaysOn ——step2 建立群集
    配置SQL Server 2012 AlwaysOn ——step1 建立AD域及DNS配置
    适应多场景应用的web系统架构探讨
    住院病案首页数据填写质量规范
    病案首页规范
    vs2015离线使用nuget
  • 原文地址:https://www.cnblogs.com/William-1234/p/4307905.html
Copyright © 2020-2023  润新知