BankApp.cs

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

namespace AdvanceCsharpPrograms
{
    internal class BankApp
    {

        public class Customers
        {
            public int CustAccNo { get; set; }
            public string CustName { get; set; }

            public string LoanType { get; set; }
        }
        public class AccountType
        {
            public string AccoType { get; set; }
           


            public List<Customers> customer = new List<Customers>();
        }

        static void Main(string[] args)
        {
            List<AccountType> accounttypeList = new List<AccountType>()
            {
                new AccountType
                {
                    AccoType="Saving",
                    
                    customer={
                        new Customers{CustAccNo=1012,CustName="User1",LoanType="Home Loan"},
                        new Customers{CustAccNo=2518,CustName="User2",LoanType="Goald Loan"},
                        new Customers{CustAccNo=8524,CustName="User10", LoanType = "Home Loan"}
                    }
                },
                new AccountType
                {
                    AccoType="Current",
                    
                    customer={
                        new Customers{CustAccNo=3155,CustName="User3",LoanType="Personal Loan"},
                        new Customers{CustAccNo=4455,CustName="User4",LoanType="Home Loan"},
                        new Customers{CustAccNo=5964,CustName="User5",LoanType = "Home Loan"},
                    }
                },

            };

            foreach (AccountType at in accounttypeList)
            {
                Console.WriteLine(at.AccoType);
                Console.WriteLine("-------------------------------------------");
            
                foreach (Customers c in at.customer)
                {
                    Console.WriteLine(" "+"Account No: "+ c.CustAccNo+"     "+"Customer Name: " + c.CustName);
                    Console.WriteLine(" " + "Loan Type: " + c.LoanType);
                    
                }
            }


        }
    } 

}