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  • C#基础:helloWord book 实例小集合

        

    数据转换,实现double转换成整型,浮点型,字符串型

        /// <summary>

        /// 数据转换,实现double转换成整型,浮点型,字符串型

        /// </summary>

        class Program

        {

            static void Main(string[] args)

            {

                double mydouble = 87.45;//原始数据

                int myint;

                float myfloat;

                string myString;

                myint = Convert.ToInt32(mydouble);

                myfloat = Convert.ToSingle(mydouble);

                myString = Convert.ToString(mydouble);

                string record = string.Format("转换后的整型数为{0}\t转换后的浮点型数为{1}\t转换后字符串型数为{2}", myint, myfloat, myString);

                Console.WriteLine(record);

                Console.ReadLine();

            }

        }

    实现一个1-100偶数相加

    static void  Main(string[] args)

            {

                int result = 0;

                for (int i = 1; i <= 100; i++)

                {

                    if (i % 2 == 0)

                        result += i;

                }

                Console.WriteLine(result);

                Console.ReadLine();

            }

    实现一个个反转后的数的输出

    注:当输入的数的末位有0,如何实现反转

    static void  Main(string[] args)

            {

                int Number = 9876;

                int Result = 0;

                int Thoudous, Hunder, Ten, Single;

                Thoudous = Number / 1000;

                Number = Number %1000;

                Hunder = Number / 100;

                Number = Number % 100;

                Ten = Number / 10;

                Number = Number % 10;

                Single = Number;

                Result = Single * 1000 + Ten * 100 + Hunder * 10 + Thoudous;

                Console.WriteLine("9876的反转数为{0}", Result);

                Console.ReadLine();

            }

    循环打印一个简单的三角形

    static void Main(String[] args)

                       {

                                //控制行数

                                int n=1;

                                while(n<=5)

                                {

                                         //控制每行输出的*数

                                         int m=1;

                                         while(m<=n)

                                         {

                                                   Console.Write("*");

                                                   m++;

                                         }

                                }

                                n++;

                                Console.WriteLine();

                               

                       }

    10分钟倒计时

    static void Main(String[] args)

                       {

                                for(int i=10;i<=0;i--)

                                {

                                         for(int j=60;j<=0;j--)

                                         {

                                                   Console.WriteLine("十分钟倒计,还是剩下的时间为:{0}分,{1}秒",i,j);

                                                   Console.ReadLine();

                                         }

                                }

                               

                       }

    猜人名

    static void Main(String[] args)

                       {

                                string name="silly";

                                Console.WriteLine("",);

                                for(int i=1;i<=3;i++)

                                {

                                         string guessName=Console.ReadLine();

                                         if(guessName==name)

                                                   break;

                                         else

                                         {

                                                   Console.WriteLine("猜测错误,你还有{0}次机会",3-i);

                                         }

                                }

                                Console.WriteLine("恭喜你,猜对了!");

                       }

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  • 原文地址:https://www.cnblogs.com/lqsilly/p/2917623.html
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