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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string strInput = Console.ReadLine();
            Console.WriteLine("输入的内容是：{0}",strInput);
            Console.ReadKey(false);
        }
    }
}



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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("请输入一个字符：");
            char c = Console.ReadKey().KeyChar;
            Console.WriteLine("\r\n字符{0}的ASCII值是：{1}",c,(int)c);
            Console.ReadKey(false);
        }
    }
}


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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            double y;
            Console.WriteLine("请输入一个整数：");
            double x = double.Parse(Console.ReadLine());

            if ((int)x == 0)
            {
                Console.Write("f(x) = 0");
            }
            else
            {
                y = 1 / x;
                Console.Write("f(x) = {0}", Math.Round(y,2));
            }
            

            Console.ReadKey(false);
        }
    }
}


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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            double y;
            Console.WriteLine("请输入一个整数：");
            double x = double.Parse(Console.ReadLine());

            if ((int)x == 0)
            {
                Console.Write("f(x) = 0");
            }
            else
            {
                y = 1 / x;
                String result = y.ToString("#0.0");
                Console.Write("f(x) = {0}", result);
            }
            

            Console.ReadKey(false);
        }
    }
}