La interfaz es una clase especial en la que podemos declarar todos nuestros métodos. Aquí, en este problema, vamos a crear una interfaz en la que vamos a declarar todas las implementaciones requeridas que son necesarias para la gestión de transacciones. Aquí, en este artículo, vamos a ver cómo funcionan las transacciones en tiempo real y cómo podemos implementarlas usando la interfaz en C#.
Nuestra interfaz contiene los siguientes métodos:
void addDeposit(int deposit_money); int withdrawCash(int req_cash); int checkBalance();
Ejemplo 1:
C#
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace transactions
{
internal class Program
{
private static string ac_no = "12345678";
static void Main(string[] args)
{
Account account = new Account();
account.SetAccount(ac_no);
account.addDeposit(123,ac_no);
int bal = account.checkBalance(ac_no);
Console.WriteLine("your current balance is " + bal);
int status = account.withdrawCash(12, ac_no);
if(status != -1)
{
Console.WriteLine("Withdrawl successfull");
int bal1 = account.checkBalance(ac_no);
Console.WriteLine("your current balance is " + bal1);
}
account.withdrawCash(12233, ac_no);
Console.ReadLine();
}
public interface ITransaction
{
void addDeposit(int deposit_money, string ac_no);
int withdrawCash(int req_cash, string ac_no);
int checkBalance(string ac_no);
}
public class Account : ITransaction
{
string account_number;
int total_cash = 0;
//Here we can add account number to database
public void SetAccount(string ac_no)
{
this.account_number = ac_no;
}
public bool CheckAccountNumber(string ac_no)
{
//we can fetch data from database
if(ac_no == this.account_number)
{
return true;
}
else
{
return false;
}
}
public void addDeposit(int deposit_money,string ac_no)
{
if(CheckAccountNumber(ac_no) == true)
{
total_cash += deposit_money;
Console.WriteLine("Rs "+ deposit_money +
" deposit successfully");
}
else
{
Console.WriteLine("You entered wrong account number");
}
}
public int checkBalance(string ac_no)
{
if (CheckAccountNumber(ac_no) == true)
{
return this.total_cash;
}
else
{
Console.WriteLine("You entered wrong account number");
return -1;
}
}
public bool isEnoughCash(int req_cash)
{
return (total_cash >= req_cash);
}
public int withdrawCash(int req_cash,string ac_no)
{
if(CheckAccountNumber(ac_no) == true)
{
if (isEnoughCash(req_cash) == true)
{
total_cash -= req_cash;
return req_cash;
}
else
{
Console.WriteLine("You don't have required cash,
please deposit money in your account");
return -1;
}
}
else
{
Console.WriteLine("You entered wrong account number");
return -1;
}
}
}
}
}
Producción:
