Check out example codes for "how to find the multiples of 3 c#". It will help you in understanding the concepts better.

Code Example 1

static void PrintNumbers()
{
    for (int i = 1; i <= 100; i++)
    {
        if (i % 3 == 0 && i % 5 == 0)
        {
            Console.WriteLine(i + " FizzBuzz");
        }
        else if ( i % 3 == 0)
        {
            Console.WriteLine(i + " Fizz");
        }
        else if (i % 5 == 0)
        {
            Console.WriteLine(i + " Buzz");
        }           
        else
        {
            Console.WriteLine(i);
        }
    }
}

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