[bitm0de]

C#

Spoiler:

Code:

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Multiples {    class Program    {        static void Main(string[] args)        {            //Variables            int intSum = 0;            string strSum = string.Empty;            //Calculate sum            for (int i = 0; i < 1000; i++)            {                if (i % 3 == 0 || i % 5 == 0)                {                    intSum += i;                    strSum = intSum.ToString();                                    }            }            Console.WriteLine("The sum is {0}", strSum); //Write sum result            //Reverse the number (another loop, boring I know)            string strSumReversed = string.Empty;            int intCount = strSum.Length;            for (int x = 0; x < strSum.Length; x++)            {                strSumReversed = strSumReversed + strSum.Substring(intCount -1, 1);                intCount = intCount - 1;            }            Console.WriteLine("The sum reversed is: {0}", strSumReversed); //Write reversed result            Console.ReadLine();                      }        }    }

String's are immutable in .NET, but why didn't you use the for loop variable here?

Code:

for (int x = 0; x < strSum.Length; x++) { strSumReversed = strSumReversed + strSum.Substring(intCount -1, 1); intCount = intCount - 1; }

Instead of keeping track of your own variable?