c#接口应用
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using System;
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using study.a;
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using study.b;
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using study;
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namespace study{
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public interface IBlankAccount
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{
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void PlayIn(decimal amount);
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bool Withdraw(decimal amount);
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decimal Balance{
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get;
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}
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}
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public interface ITransferBankAccount:IBlankAccount{
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bool TransaferTo(IBlankAccount BankName,decimal amcount);
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}
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public class MainEntry
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{
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static void Main(){
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ITransferBankAccount vensAccount=new saveCount();
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IBlankAccount jenAccount=new GoldAccount();
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vensAccount.PlayIn(400);
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jenAccount.PlayIn(500);
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// Console.WriteLine(vensAccount.ToString());
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// vensAccount.Withdraw(100);
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// vensAccount.PlayIn(800);
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// vensAccount.Withdraw(200);
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vensAccount.TransaferTo(jenAccount,100);
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Console.WriteLine(vensAccount.ToString());
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Console.WriteLine(jenAccount.ToString());
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}
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}}
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namespace study.a
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{
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public class saveCount:ITransferBankAccount{
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private decimal balance;
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public void PlayIn(decimal amount)
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{
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balance+=amount;
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}
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public bool Withdraw(decimal amount)
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{
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if(balance>=amount)
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{
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balance-=amount;
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return true;
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}
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Console.WriteLine("取钱失败");
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return false;
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}
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public decimal Balance{
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get{
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return balance;
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}
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}
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public bool TransaferTo(IBlankAccount BankName,decimal amcount)
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{
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bool result;
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if((result= Withdraw(amcount))==true)
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BankName.PlayIn(amcount);
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return result;
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}
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public override string ToString(){
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return String.Format("{0,6:c}",balance);
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}
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}}
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namespace study.b{
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public class GoldAccount:ITransferBankAccount{
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private decimal balance;
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public void PlayIn(decimal amount)
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{
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balance+=amount;
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}
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public bool Withdraw(decimal amount)
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{
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if(balance>=amount)
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{
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balance-=amount;
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return true;
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}
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Console.WriteLine("取钱失败");
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return false;
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}
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public decimal Balance{
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get{
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return balance;
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}
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}
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public bool TransaferTo(IBlankAccount BankName,decimal amcount)
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{
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bool result;
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if((result= Withdraw(amcount))==true)
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BankName.PlayIn(amcount);
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return result;
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}
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public override string ToString(){
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return String.Format("{0,6:c}",balance);
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}
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}}
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