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override new
base.X();
static
protected public private
try{} catch(Exception ex){}
int dog2;
public int dog1 { set { dog2 = value; } get { return dog2; } }
int a, b;
CallRef(ref a, ref b);
public static void CallRef(ref int x, ref int y){...}
{
private string info; //Private屬性，其他繼承的類別無法改變它的值
public string id, name, sex, position; //其他繼承的類別可以使用這些屬性
public int age, days, salary; //其他繼承的類別可以使用這些屬性
public void ShowPrivateInfo() //透過繼承類別呼叫ShowPrivateInfo()
{
info = "This is a program about class inheritance.";
Console.WriteLine(info);
}
public void ShowBaseInfo() //透過繼承類別呼叫ShowBaseInfo()
{
Console.WriteLine(position + "的基本資訊：") ;
Console.WriteLine("編號：[" + id + "]");
Console.WriteLine("姓名：[" + name + "]");
Console.WriteLine("性別：[" + sex + "]");
Console.WriteLine("年齡：[" + age+ "]");
Console.WriteLine("本月工作天數：[" + days + "]");
}
}
//-----------------------------------------------------------------------------------------
class Manager : Employee //Manager繼承Employee，但薪水算法不同
{
public void CountSalary() //Manager的薪水計算方式：將工作天數帶入薪水計算公式
{
salary = 60000 + days * 1000;
Console.WriteLine(position + "的本月薪水：[" + salary + "]");
}
}
class Normal : Employee //Normal繼承Employee，但薪水算法不同
{
public void CountSalary() //Normal的薪水計算方式：將工作天數帶入薪水計算公式
{
salary = days * 1500;
Console.WriteLine(position + "的本月薪水：[" + salary + "]");
}
}
class HourCount : Employee //HourCount繼承Employee，但薪水算法不同
{
public void CountSalary() //HourCount的薪水計算方式：將工作天數帶入薪水計算公式
{
salary = days * 100 * 8 ;
Console.WriteLine(position + "的本月薪水：[" + salary + "]");
}
}
//-----------------------------------------------------------------------------------------
class Program
{
static void Main(string[] args)
{
string choice;
bool exit = false;
Console.Write("請選擇要輸的的員工資訊：(a)經理 (b)一般員工 (c)時薪人員 (d)離開程式：");
choice = Console.ReadLine();
while (exit == false)
{
if (choice == "a")
{
Manager mm = new Manager(); //宣告一個Manager類別
mm.position = "經理";
mm.ShowPrivateInfo();
//輸入經理的各項資訊
Console.WriteLine("請輸入" + mm.position + "訊息");
Console.Write("編號：");
mm.id = Console.ReadLine();
Console.Write("姓名：");
mm.name = Console.ReadLine();
Console.Write("性別：");
mm.sex = Console.ReadLine();
Console.Write("年齡：");
mm.age = Int32.Parse(Console.ReadLine());
Console.Write("本月工作天數：");
mm.days = Int32.Parse(Console.ReadLine());
Console.WriteLine("-----------------------------------------------------");
//顯示經理的基本訊息與該月薪水
mm.ShowBaseInfo();
mm.CountSalary();
}
else if (choice == "b")
{
Normal nn = new Normal();
nn.position = "一般員工";
nn.ShowPrivateInfo();
//輸入一般員工的各項資訊
Console.WriteLine("請輸入" + nn.position + "訊息");
Console.Write("編號：");
nn.id = Console.ReadLine();
Console.Write("姓名：");
nn.name = Console.ReadLine();
Console.Write("性別：");
nn.sex = Console.ReadLine();
Console.Write("年齡：");
nn.age = Int32.Parse(Console.ReadLine());
Console.Write("本月工作天數：");
nn.days = Int32.Parse(Console.ReadLine());
Console.WriteLine("-----------------------------------------------------");
//顯示一般員工的基本訊息與該月薪水
nn.ShowBaseInfo();
nn.CountSalary();
}
else if (choice == "c")
{
HourCount hh = new HourCount();
hh.position = "時薪人員";
hh.ShowPrivateInfo();
//輸入時薪人員的各項資訊
Console.WriteLine("請輸入" + hh.position + "訊息");
Console.Write("編號：");
hh.id = Console.ReadLine();
Console.Write("姓名：");
hh.name = Console.ReadLine();
Console.Write("性別：");
hh.sex = Console.ReadLine();
Console.Write("年齡：");
hh.age = Int32.Parse(Console.ReadLine());
Console.Write("本月工作天數：");
hh.days = Int32.Parse(Console.ReadLine());
Console.WriteLine("-----------------------------------------------------");
//顯示時薪人員的基本訊息與該月薪水
hh.ShowBaseInfo();
hh.CountSalary();
}
else if (choice == "d") //按 d 離開程式
{
exit = true;
break;
}
else //輸入錯誤時顯示錯誤訊息
{
Console.WriteLine("-----------------------------------------------------");
Console.WriteLine("請輸入正確的選項或是按(d)離開程式!!");
}
Console.WriteLine("-----------------------------------------------------");
Console.Write("請選擇要輸的的員工資訊：(a)經理 (b)一般員工 (c)時薪人員 (d)離開程式：");
choice = Console.ReadLine();
}
}
}
Employee 阿狗 15.5
Manager 阿貓 40
code:
using System;
using System.IO;
class Employee
{
private string name;
protected float billingRate;
protected float salary;
public Employee(string name, float billingRate)
{
this.name = name;
this.billingRate = billingRate;
}
public float CalculateCharge(float hours)
{
return (salary = hours * billingRate);
}
public float GetSalary()
{
return salary;
}
public string TypeName()
{
return ("Employee");
}
}
class Manager : Employee
{
private float allowance;
public Manager(string name, float billingRate): base(name, billingRate)
{
allowance = 1000;
}
public new float CalculateCharge(float hours)
{
if (hours < 1.0F)
hours = 1.0F;
return (salary = hours * billingRate+allowance);
}
public new string TypeName()
{
return ("Civil Employee");
}
}
class Test
{
public static void Main()
{
Console.Write("請輸入檔案位置：");
string path2 = Console.ReadLine();
StreamReader sr = new StreamReader(@path2,System.Text.Encoding.Default);
string str = sr.ReadToEnd();
string[] s = str.Split('\n');
Employee[] e = new Employee[s.Length];
for (int i = 0; i < s.Length; i++)
{
string[] tmp = s[i].Split(' ');
if (tmp[0] == "Manager")
e[i] = new Manager(tmp[1], float.Parse(tmp[2]));
else if (tmp[0] == "Employee")
e[i] = new Employee(tmp[1], float.Parse(tmp[2]));
}
for (int i = 0; i < e.Length; i++)
{
e[i].CalculateCharge(i * 1.0F + 20.0F);
Console.WriteLine("{0} charge = {1}", e[i].TypeName(), e[i].GetSalary());
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace ConvertTest
{
class zzz
{
public double to10(string value, int based)
{
double sum = 0.0;
int count = 0;
if (value.Contains("."))
count = value.IndexOf('.') - 1;
else
count = value.Length - 1;
for (int i = 0; i < value.Length; i++) //n=>10
if (value[i] != '.')
{
if (char.Parse(value[i].ToString().ToUpper()) >='A')
sum += (char.Parse(value[i].ToString().ToUpper())-'A'+10) * Math.Pow(based, count--);
else
sum += Int32.Parse(value[i].ToString()) * Math.Pow(based, count--);
}
return sum;
}
public void TentoN(double sum,int gg)
{
string[] arr = sum.ToString().Split('.');
ArrayList dog1 = new ArrayList();
int left = Int32.Parse(arr[0]);
while (left != 0)
{
dog1.Add(left % gg);
left /= gg;
}
dog1.Reverse();
if (sum.ToString().Contains("."))
{
dog1.Add(".");
double right = double.Parse("0." + arr[1].ToString());
for (int i = 0; i < 10; i++)
{
if (Math.Floor(right) == Math.Ceiling(right))
break;
right = right * gg;
dog1.Add(Math.Floor(right));
right = right - Math.Floor(right);
}
}
for (int i = 0; i < dog1.Count; i++)
{
if (Int32.Parse(dog1[i].ToString())>9)
Console.Write((char)('A' + 10 - Int32.Parse(dog1[i].ToString())));
else
Console.Write(dog1[i]);
}
}
}
class Program
{
static void Main(string[] args)
{
Console.Write("請輸入數值:");
string value = Console.ReadLine();
Console.Write("請輸入基底:");
int based = Int32.Parse(Console.ReadLine());
zzz dog = new zzz();
double sum = dog.to10(value,based);
Console.WriteLine("10進位是 " + sum);//10
//=========================TO 10==================
Console.Write("請輸入基底:");
int gg = Int32.Parse(Console.ReadLine());
//int a=Convert.ToInt32(arr[0]);
dog.TentoN(sum, gg);
Console.ReadKey();
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
namespace ConsoleApplication7
{
class matrix
{
public int[,] a;
public matrix(int dog1,int dog2)//見夠子
{
a = new int[dog1, dog2];
}
public void insert()//書入資廖
{
Console.WriteLine("開始輸入矩陣的資料");
for (int i = 0; i < a.GetLength(0); i++)
{
for (int j = 0; j < a.GetLength(1); j++)
{
Console.Write("輸入第[{0},{1}] 的資料： ", i, j);
a[i, j] = Int32.Parse(Console.ReadLine());
}
}
}
public static matrix operator *(matrix dog1, matrix dog2) //****
{
matrix c = new matrix(dog1.a.GetLength(0),dog2.a.GetLength(1));
for (int i = 0; i < c.a.GetLength(0); i++)
{
for (int j = 0; j < c.a.GetLength(1); j++)
{
for (int k = 0; k < dog1.a.GetLength(1); k++)
{
c.a[i, j] += dog1.a[i, k] * dog2.a[k, j];
}
}
}
return c;
}
public void Print(matrix dog)
{
Console.WriteLine("a 陣列是 ");
for (int i = 0; i < dog.a.GetLength(0); i++)
{
for (int j = 0; j < dog.a.GetLength(1); j++)
{
Console.Write("{0} ", dog.a[i, j]);
}
Console.WriteLine();
}
}
}
class Program
{
static void Main(string[] args)
{
int v, x, y, z;
Console.WriteLine("請輸入第一個矩陣第一維度的大小");
v = Int32.Parse(Console.ReadLine());
Console.WriteLine("請輸入第一個矩陣第二維度的大小");
x = Int32.Parse(Console.ReadLine());
matrix m1 = new matrix(v, x);
m1.insert();
Console.WriteLine("請輸入第二個矩陣第一維度的大小");
y = Int32.Parse(Console.ReadLine());
Console.WriteLine("請輸入第二個矩陣第二維度的大小");
z = Int32.Parse(Console.ReadLine());
matrix m2 = new matrix(y, z);
m2.insert();
if (x == y)
{
m1.Print(m1 * m2);
}
else
{
Console.WriteLine("第一矩陣的第二維度不等於第二矩陣的第一維度，故不能相乘");
}
}
}
}
select dog.Provider_no from provider dog
where dog.Provider_no not in
(select distinct Provider.Provider_no from
(
SELECT Provider.Provider_no,p1.Item_No
FROM Provide p1,Provider
where p1.Provider_no='001' and Provider.Provider_no not in
(SELECT provide.Provider_no FROM Provider INNER JOIN provide ON Provider.Provider_no = provide.Provider_no where p1.Item_no = provide.Item_no)
)
)
Select Store.Sales_Region, dog from
(Select Store.Sales_Region, SUM(Total) as dog from
(SELECT Sale.Store_No, SUM(Sale.Units_Sold* Item.Unit_Price) as Total
from Sale, Item
where Sale.Item_No = Item.Item_No group by Sale.Store_No) , Store
where Sale.Store_No = Store.Store_No
group by Store.Sales_Region)
where dog =
(Select Max(dog) from
(Select Store.Sales_Region, SUM(Total) as dog from
(SELECT Sale.Store_No, SUM(Sale.Units_Sold* Item.Unit_Price) as Total
from Sale, Item
where Sale.Item_No = Item.Item_No group by Sale.Store_No) , Store
where Sale.Store_No = Store.Store_No
group by Store.Sales_Region))
where Total IN (Select Max(Total) from (SELECT Sale.Store_No, SUM(Sale.Units_Sold* Item.Unit_Price) as Total from Sale, Item where Sale.Item_No = Item.Item_No group by Sale.Store_No))