I can not debug the following code?Where is wrong?Thanks a lot.
static void Main(string[] args)
        {
            //
            // TODO: add code here
            //
            double balance,interestRate,targetBalance;
            Console.WriteLine("What is your current balance?");
            balance=Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("What is current annual interest rate(in %)?");
            interestRate=1+Convert.ToDouble(Console.ReadLine() )/100.0;
            Console.WriteLine("What balance would you like to have?");
            targetBalance=Convert.ToDouble(Console.ReadLine()) ;

            int totalYears=0;
            do
            {
                balance*=interestRate;
                ++totalYears;
            }
                while(balance<targetBalance);
            Console.WriteLine("In {0} year{1} you'll have a balance of {2}.",totalYears,totalYears=1?"":"s",balance);
        }

      It can debug by changeing code like this(the last line):Console.WriteLine("In {0} year{1} you'll have a balance of {2}.",totalYears,totalYears!=1?"s":"",balance);
        }

Yes, right.

DingQiang