C#小练习09

定义一个公司员工类，包含员工的员工号，姓名，性别，出生年月，年龄，工资金额等字段和属性，其中规定姓名不能为空，工资金额不低于当地最低工资600元，员工号从1000到5999，并给出将员工所有信息打印出来的ToString()方法。  

 

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

namespace CSharp_9_01
{
    class Employee
    {
        private static int Id;

        public static int Id1
        {
            get
            {
                if (Employee.Id >= 1000 && Employee.Id <= 5999)
                {
                    return Employee.Id;
                }
                else
                {
                    Console.WriteLine("员工工号应为1000到5999之间，已经初始化为1000");
                    return 1000;
                }
            }
            set { Employee.Id = value; }
        }
        private static string Name;

        public static string Name1
        {
            get
            {
                if (Employee.Name != null)
                {
                    return Employee.Name;
                }
                else
                    Console.WriteLine("姓名不能为空，已将姓名初始化为小明");
                return "小明";
            }
            set
            {
                if (Employee.Name != null)
                {
                    Employee.Name = value;
                }
                else
                {
                    Console.WriteLine("姓名不能为空，已将姓名初始化为小明");
                    Employee.Name = "小明";
                }
            }
        }
        private static char Sex = '男';
        private static int Year = 1997;
        private static int Month = 09;
        private static int Day = 09;
        private static int Age = 20;
        private static float Salary;

        public static float Salary1
        {
            get
            {
                if (Employee.Salary >= 600)
                {
                    return Employee.Salary;
                }
                else
                {
                    Console.WriteLine("最低工资不低于600,已经初始化为600");
                    return 600;
                }
            }
            set
            {
                if (Employee.Salary >= 600)
                {
                    Employee.Salary = value;
                }
                else
                {
                    Console.WriteLine("最低工资不低于600,已经初始化为600");
                    Employee.Salary = 600;
                }
            }
        }
        public override string ToString()
        {

            return (string.Format("员工工号为：{0}\n员工姓名为：{1}\n员工性别为：{2}\n员工出生年月日为：{3}年{4}月{5}日\n员工年龄为：{6}\n员工工资为：{7}\n", Id1, Name1, Sex, Year, Month, Day, Age, Salary1));
        }
       
        static void Main(string[] args)
        {
            Employee e = new Employee();
            Console.WriteLine(e);
           
        }
    }
}

定义一个电视机类，具有以下特性：

1、生产厂家；

2、是否支持数字信号；

3、价格；

4、当前频道(最多有100个频道)；

一台电视机必须有以下操作功能：

1、打开电视；

2、关闭电视；

3、选台；

4、显示当前频道；

 

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

namespace CSharp_9_02
{
    class Tv
    {
        static int num = 0;
        static string factory="熊猫牌";
        static bool IssupNub=true;
        static float Price=1999;
        static int[] Channel = new int[100];
        static void OpenTv()
        {
            Console.WriteLine("输入要打开的频道数字:");
            num++;
            Channel[num] = int.Parse(Console.ReadLine());
            Console.WriteLine("正在打开电视即将打开:频道{0}……", Channel[num]);
            Console.WriteLine("打开成功！");
        }
        
        static void ChangeChannel()
        {
            Console.WriteLine("输入要切换的频道数字:");
            num++;
            Channel[num] = int.Parse(Console.ReadLine());
            Console.WriteLine("正在切换到频道{0}……", Channel[num]);
        }
        static void ShowTv()
        {
            Console.WriteLine("当前所有已打开频道列表为:");
            for (int i = 1; i <= num; i++)
            {
                Console.WriteLine("channel:{0}",Channel[i]);
            } 
            Console.WriteLine("当前正在收看频道为:{0}", Channel[num]);
           
        }
        static void CloseTv()
        {

            num--;
            Console.WriteLine("正在关闭电视……");
        }

        static void Main(string[] args)
        {
            OpenTv();
           
            ChangeChannel();
            ShowTv();
            CloseTv();
            
        }
    }
}
    
    

定义复数类complex，使用运算符重载实现复数相加、想减、相乘和相除的运算。

 

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

namespace CSharp_9_03
{
    public struct Complex
    {

        public double real;
        public double image;
        public Complex(double real, double image)
        {
            this.real = real;
            this.image = image;

        }
        //运算符重载+
        public static Complex operator +(Complex c1, Complex c2)
        {
            return new Complex(c1.real + c2.real, c1.image + c2.image);
        }
        //运算符重载-
        public static Complex operator -(Complex c1, Complex c2)
        {
            return new Complex(c1.real - c2.real, c1.image - c2.image);
        }
        //运算符重载* (a+bi)(c+di)=(ac-bd)-(bc+ad)i
        public static Complex operator *(Complex c1, Complex c2)
        {
            double a=c1.real * c2.real - c1.image * c2.image;
            double b= c1.image * c2.real + c1.real * c2.image;
            return new Complex(a,b);
        }
        //运算符重载/
        public static Complex operator /(Complex c1, Complex c2)
        {
            double a = (c1.real * c2.real + c1.image * c2.image) / (c2.image * c2.image + c2.real * c2.real);
            double b = (c1.image * c2.real - c1.real * c2.image) / (c2.real * c2.real + c2.image * c2.image);
            return new Complex(a, b);
        }
        public override string ToString()
        {
            if (image < 0) return (string.Format("{0}{1}i", real, image));
            return (string.Format("{0}+{1}i", real, image));
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            Complex num1 = new Complex(2, 3);
            Complex num2 = new Complex(3, 4);
            Console.WriteLine("复数1：{0:f2}", num1);
            Console.WriteLine("复数2：{0:f2}", num1);
            Console.WriteLine("复数相加：{0:f2}", num1 + num2);
            Console.WriteLine("复数相减：{0:f2}", num1 - num2);
            Console.WriteLine("复数相乘：{0:f2}", num1 * num2);
            Console.WriteLine("复数相除：{0:f2}", num1 / num2);
        }
    }
}