Question

How to find all the armstrong numbers in the range of 0 and 999 in C#

Answer 1

using System;

// An Armstrong number of three digits is an integer that the sum 
// of the cubes of its digits is equal to the number itself

// 371 is an Armstrong number: 3**3 + 7**3 + 1**3 = 371

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            int reminder, sum, tmp;

            for (int n = 0; n <= 999; n++)
            {
                tmp = n;
                sum = 0;

                while (tmp != 0)
                {
                    reminder = tmp % 10;
                    tmp = tmp / 10;
                    sum = sum + (reminder * reminder * reminder);
                }
                if (sum == n)
                    Console.WriteLine("{0}", n);
            }
        }
    }
}


/*
run:
 
0
1
153
370
371
407

*/

 

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