循环结构之WHILE语句

using System;
namespace a
{
class Program
{
public static void Main(string[] args)
{
double balance,interestRate,targetBalance;
Console.WriteLine("What is your current balance?");
balance=Convert.ToDouble(Console.ReadLine());
Console.WriteLine("What is your 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;
while (balance <targetBalance)
{
balance*=interestRate;
++totalYears;
}
while(balance<targetBalance);
Console.WriteLine("In {0} year {1} you'll have a balance of {2}.",totalYears,totalYears==1?"":"s",balance);
Console.ReadKey();
}
}
}