SRM 149 DIV 2 (250)

SRM 149 DIV 2 (250)
문제 요약 : dollars, cents 표기법에 맞게 출력하기

using System;

 

public class FormatAmt

{

    public string amount(int dollars, int cents)

    {

        string res = "", temp = dollars.ToString();

        for (int i = temp.Length - 1; i >= 0; i--)

        {

            res = temp[i] + res;

            if ((temp.Length - i) % 3 == 0 && i != 0) res = "," + res;

        }

        if (cents.ToString().Length > 1) res += "." + cents.ToString();

        else res += ".0" + cents.ToString();

        return "$" + res;

    }

}