说明关于银行的存款代码： 变量yuge：银行卡余额；lixilv：利息率 ；yigezhi ：一个期望的值。
static void Main(string[] args)
        {
            double yuge, lixilv, yigezhi;
            Console.WriteLine(" what is your current yuge?");
            yuge = Convert.ToDouble(Console.ReadLine());
            Console.WriteLine("what is your current annual interest rate (in %)?");
            lixilv = 1 + Convert.ToDouble(Console.ReadLine()) / 100;
            Console.WriteLine("what balance would you like to have?");
            yigezhi = Convert.ToDouble(Console.ReadLine());

            int totaln = 0;
            do
            {
                yuge *= lixilv;

                ++totaln;
            }
            while(yuge < yigezhi);

            
            Console.WriteLine("in{0}year{1}you  havea yuge{2}.",totaln,totaln== 1?"":"s",yuge);
            Console.ReadLine();
               
        }
运行结果没问题。do..while语句怎么改成for语句。
内容不变。谢谢各位大侠。