2018-05-24 Csharp 学习

先贴今天的习题和练习代码：

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习题按1~8编号 自己写的代码：

         #region 练习1

        Console.WriteLine("请输入姓名");

        Console.ReadLine();

        Console.WriteLine("请输入C#成绩");

        double cSharp = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("请输入Unity成绩");

        double unity = Convert.ToDouble(Console.ReadLine());

        string result = cSharp >= 90 && unity >= 90 ? "恭喜您毕业了" : "您学分不够暂未能毕业";

        Console.WriteLine(result);

        Console.WriteLine();

        Console.WriteLine();

        #endregion

        #region 练习2

        Console.WriteLine("请输入年份");

        int year = Convert.ToInt32(Console.ReadLine());

        string result2 = (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) ? "这一年是闰年" : "这一年不是闰年";//判断闰年

        Console.WriteLine(result2);

        Console.ReadKey();

        #endregion

        #region 练习3

        Console.WriteLine("请输入第一个数：");

        double input01 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("请输入第二个数：");

        double input02 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("最大值是：");

        double result3 = input01 >= input02 ? input01 : input02;

        Console.WriteLine(result3);

        Console.WriteLine();

        Console.ReadKey();

        #endregion

        #region 练习4

        Console.WriteLine("请输入您的姓名：");

        string name = Console.ReadLine();

        string result4 = name == "老王" ? "警察" : "流氓";

        Console.WriteLine(result4);

        Console.ReadKey();

        #endregion

        #region 练习5

        Console.WriteLine("请输入您的姓名：");

        string name5 = Console.ReadLine();

        Console.WriteLine("请输入您的年龄：");

        int age5 = Convert.ToInt32(Console.ReadLine());

        if (age5 >= 18)

        {

            Console.WriteLine(name5 + "可以看学习资料");

        }

        else

            Console.WriteLine(name5 + "不可以看学习资料");

        Console.ReadKey();

        #endregion

        #region 练习6

        Console.WriteLine("请输入年龄：");

        int age6 = Convert.ToInt16(Console.ReadLine());

        if (age6 >= 23)

        {

            Console.WriteLine("你到了结婚年龄了");

        }

        else

            Console.WriteLine("你还未到结婚年龄");

        Console.ReadKey();

        #endregion

        #region 练习7

        Console.WriteLine("请输入语文成绩：");

        double chinese7 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("请输入数学成绩：");

        double math7 = Convert.ToDouble(Console.ReadLine());

        Console.WriteLine("请输入英语成绩：");

        double english7 = Convert.ToDouble(Console.ReadLine());

        if (((chinese7 > 70 && math7 > 80 && english7 > 90)) || (chinese7 == 100 || math7 == 100 || english7 == 100) || (chinese7 >= 90 && (math7 > 80 || english7 > 70)))

        {

            Console.WriteLine("非常棒！继续加油！");

        }

        else

            Console.WriteLine("革命尚未成功，同志仍需努力！");

        Console.ReadKey();

        #endregion

        #region 练习8

        Console.WriteLine("请输入用户名：");

        string admin = Console.ReadLine();

        Console.WriteLine("请输入密码：");

        string password = Console.ReadLine();

        if (admin == "admin" && password == "123456")

        {

            Console.WriteLine("登陆成功！");

        }

        else

            Console.WriteLine("登陆失败！");

        Console.WriteLine();

        Console.ReadKey();

        #endregion