C# mod operator

Question

Hi I' a bit unsure of this what would be the best way to do the following example?

There are four whole numbers below the number 14 that are multiples of either 4 or 7. 
They are: 4, 7, 8 and 12 The sum of these numbers is 31 Write a C# program to find all the 
multiples of either 4 or 7 between, and including, 100 and 120. Sum the found multiples and print 
the total out to the console.  
Also print out how long your program took to execute.

Thanks alot!!!

Vulpes · Answer

Try this: using System; using System.Diagnostics; class Program { static void Main() { Stopwatch sw = Stopwatch.StartNew(); int sum = 0; for(int i = 100; i { if ( (i % 4) == 0 || (i % 7) == 0) sum += i; } Console.WriteLine(The sum of numbers which are multiples of 4 or 7 is {0} sum); sw.Stop(); Console.WriteLine(The program took {0} milliseconds to execute sw.ElapsedMilliseconds); Console.ReadKey(); } }