This post contains a total of 21+ Hand-Picked C Sharp Armstrong Number Checker & Finder Program Examples with Source Code. All the Armstrong Number Checker & Finder programs are made using C Sharp Programming Language.
You can use the source code of these programs for educational purpose with credits to the original owner.
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1. By Zephyr Koo
Made by Zephyr Koo. Simple C# Program to check if a number is Armstrong or not. ( Source )
153 153 is an Armstrong number.
using System;
using System.Linq;
namespace SoloLearn
{
class Program
{
static void Main(string[] zephyr_koo)
{
ValidateFromUserInput();
//PopulateArmstrongNumber(10000);
}
static void ValidateFromUserInput()
{
var input = Console.ReadLine();
int number;
if (Int32.TryParse(input, out number) && number > 0)
{
Console.WriteLine($"{ number } is { (IsAmstrongNumber(number) ? string.Empty : "NOT ") }an Armstrong number.");
}
}
static void PopulateArmstrongNumber(int maximum)
{
Console.WriteLine($"Armstrong number from 0 to { maximum }:");
Console.WriteLine(string.Join(", ", Enumerable.Range(0, maximum).Where(n => IsAmstrongNumber(n))));
}
static bool IsAmstrongNumber(int number)
{
var strNumber = number.ToString();
return strNumber.Sum(c => Math.Pow(Char.GetNumericValue(c), strNumber.Length)) == number;
}
}
}2. By Mickel
Made by Mickel. Program to check whether a given number is an Armstrong number or not. This program also prints all the armstrong numbers in that range. ( Source )
This program shows all Armstrong Numbers in a range of 1 to n. In the range from 1 to 999 there are the following Armstrong Numbers: 1 2 3 4 5 6 7 8 9 153 370 371 407 NOTE: 999 isn't a Armstrong number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int number;
Console.WriteLine("This program shows all Armstrong Numbers in a range of 1 to n.");
Console.WriteLine();
number = int.Parse(Console.ReadLine());
Console.WriteLine("In the range from 1 to {0} there are the following Armstrong Numbers:", number);
for(int n = 1; n <= number; n++) {
if (ArmstrongNumber(n)) {
Console.Write("{0} ", n);
}
}
Console.WriteLine("\n\nNOTE: {0} {1} a Armstrong number.", number, ArmstrongNumber(number) ? "is" : "isn\'t");
}
static bool ArmstrongNumber(int num) {;
int remainder;
int sum = 0;
int pow = (int) Math.Floor(Math.Log10(num) + 1);
for (int i = num; i > 0; i /= 10) {
remainder = i % 10;
sum += (int) Math.Pow(remainder, pow);
}
if (sum == num) {
return true;
}
return false;
}
}
}
3. By Julia Shabanova
Made by Julia Shabanova. C# Armstrong checker program. ( Source )
370 370 is an Armstrong number
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int sum = 0;
string b = Console.ReadLine();
int len = b.Length;
int num = Convert.ToInt32(b);
for (int i=len; i> 0;i--)
{sum += Convert.ToInt32(Math.Pow(num%10, len));
num = num/10;}
if (sum == Convert.ToInt32(b))
{Console.Write(b + " is an Armstrong number");}
else
{Console.Write(b + " isn't an Armstrong number");}
}
}
}4. By David Carroll
Made by David Carroll. Checks if the numbers in a string are Armstrong or not. Change the input numbers in the line ‘ string[] inputs = {“-1”, “abc”, “3”, “153”, “12”, “1634” }; ( Source )
False False True True False True
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Linq;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
//An Armstrong Number is equal to the sum of the cubes of its digits.
string[] inputs = {"-1", "abc", "3", "153", "12", "1634" };
//string[] inputs = Console.In.ReadToEnd().Split('\n');
(from input in inputs select input.All(Char.IsNumber) ? input : "10").ToList()
.ForEach( input => Console.WriteLine(
input.Select(digit => uint.Parse(digit.ToString()))
.Sum(digit => Math.Pow(digit, input.Length))
.Equals(ulong.Parse(input))
));
}
}
}
5. By David Carroll
Another C# Armstrong number checker program by David Carroll. ( Source )
9 is an Armstring Number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Linq;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
// NOTE: Constraints not yet implemented.
string input = Console.ReadLine();
var isvalid = input.Select(digit => int.Parse(digit.ToString()))
.Sum(digit => Math.Pow(digit, input.Length))
.Equals(int.Parse(input));
Console.WriteLine("{0} is{1} an Armstring Number.", input, isvalid ? "" : " not");
}
}
}
6. By ChillPill 🌶
Made by ChillPill 🌶. ( Source )
Enter a number: You entered 370 1 is an armstrong number. 2 is an armstrong number. 3 is an armstrong number. 4 is an armstrong number. 5 is an armstrong number. 6 is an armstrong number. 7 is an armstrong number. 8 is an armstrong number. 9 is an armstrong number. 153 is an armstrong number. 370 is an armstrong number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int num;
Console.WriteLine("Enter a number: ");
num = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("You entered {0}", num);
for(int i=1;i<=num;i++){
checkarmstrongnumber(i);
}
//checkarmstrongnumber(num);
}
static void checkarmstrongnumber(int x){
string mynumber = x.ToString();
int count = mynumber.Length ;
char digyt;
int total = 0;
for(int i = 0; i<count; i++){
digyt = mynumber[i];
int powar = 1;
for(int y = 1; y <=count; y++){
powar *= ((int)(digyt-'0'));
}
total += powar;
}
if(total == x){
Console.WriteLine(total + " is an armstrong number.");
}
}
}
}
7. By Vishal Panchal
Made by Vishal Panchal. ( Source )
Enter the number: 765 Not an Armstrong Number
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication6{
class Program{
static void Main(string[] args){
int number, remainder, sum=0;
Console.Write("Enter the number:");
number = int.Parse(Console.ReadLine());
for (int i = number; i > 0; i=i/10) {
remainder = i % 10;
sum = sum + remainder * remainder
* remainder ;
}
if (sum == number)
Console.Write("Is an Armstrong Number");
else
Console.Write("Not an Armstrong Number");
Console.ReadLine();
}
}
}
8. By M Rashid Khan
Made by M Rashid Khan. This C# Program is written to Check Whether the Entered Number is an Armstrong Number or Not . ( Source )
enter the Number: 371 Entered Number is an Armstrong Number
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int number, remainder, sum = 0;
Console.Write("enter the Number: ");
number = int.Parse(Console.ReadLine());
for (int i = number; i > 0; i = i / 10)
{
remainder = i % 10;
sum = sum + remainder * remainder * remainder;
}
if (sum == number)
{
Console.Write("Entered Number is an Armstrong Number");
}
else
Console.Write("Entered Number is not an Armstrong Number");
Console.ReadLine();
}
}
}
9. By Sumit Patil
Made by Sumit Patil. ( Source )
Enter number 444 is not Armstrong number
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int num,num1,cal=0,temp;
Console.WriteLine("Enter number");
num=int.Parse(Console.ReadLine());
temp=num;
while(temp>0)
{
num1=temp%10;
cal=cal+num1*num1*num1;
temp=temp/10;
}
if(cal==num)
Console.WriteLine(num+" is Armstrong number");
else
Console.WriteLine(num+" is not Armstrong number");
}
}
}
10. By Derek Stan G. Apostol
Made by Derek Stan G. Apostol. The program will find and print all the Armstrong number between a input range. ( Source )
1 10000 1 is an Armstrong Number 2 is an Armstrong Number 3 is an Armstrong Number 4 is an Armstrong Number 5 is an Armstrong Number 6 is an Armstrong Number 7 is an Armstrong Number 8 is an Armstrong Number 9 is an Armstrong Number 153 is an Armstrong Number 370 is an Armstrong Number 371 is an Armstrong Number 407 is an Armstrong Number 1634 is an Armstrong Number 8208 is an Armstrong Number 9474 is an Armstrong Number
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
/*Input lowest then highest*/
double o=Convert.ToDouble(Console.ReadLine());
double p=Convert.ToDouble(Console.ReadLine());
for(;o<p;o++)
{
string str = Convert.ToString(o);
int length = str.Length;
double[] number = new double[length];
for(int x=0;x<length;x++)
{
number[x]=Math.Pow((str[x]-48),length);
}
double w=number.Sum();
if(w==Convert.ToDouble(str))
{
Console.WriteLine("{0} is an Armstrong Number",str);
}
}
}
}
}
11. By Eugene Nefedov
Made by Eugene Nefedov. Program to find Armstrong numbers between a given range. Enter the range in line for (int i=100; i<1000; ++i) ( Source )
153 370 371 407
using System;
class Programm{
static void Main ()
{
for (int i=100; i<1000; ++i)
{
int x = i/100;
int y = i%100/10;
int z = i%10;
int q = (int) Math.Pow(x,3) + (int) Math.Pow(y,3) + (int) Math.Pow(z,3);
if (q==i)
Console.WriteLine(q);
}
}
}12. By Derek Stan G. Apostol
Another program by Derek Stan G Apostol to check if a given number is Armstrong or not. ( Source )
153 153 is an Armstrong number
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
string str = Console.ReadLine();
int length = str.Length;
double[] number = new double[length];
for(int x=0;x<length;x++)
{
number[x] = Math.Pow(str[x]-48,length);
}
double w=(number.Sum());
if (w==Convert.ToDouble(str))
{
Console.WriteLine("{0} is an Armstrong number",str);
}
else
{
Console.WriteLine("Nah");
}
}
}
}
13. By Shashank
Made by Shashank. Program to check Armstrong Number. ( Source )
Enter the Number= 123 123 Not Armstrong Number.
using System;
public class Program
{
public static void Main(string[] args)
{
int n,r,sum=0,temp;
n= int.Parse(Console.ReadLine());
Console.Write("Enter the Number= "+n);
temp=n;
while(n>0)
{
r=n%10;
sum=sum+(r*r*r);
n=n/10;
}
if(temp==sum)
Console.Write(" Armstrong Number.");
else
Console.Write(" Not Armstrong Number.");
}
} 14. By Sumit Pandey
Made by Sumit Pandey. ( Source )
124 No
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int n = Convert.ToInt32(Console.ReadLine());
int rem,rev=0,temp=n;
while(temp>0)
{
rem=temp%10;
rev=rev+rem*rem*rem;
temp/=10;
}
if (rev==n)
{
Console.WriteLine("Yes");
}
else
{
Console.WriteLine("No");
}
}
}
}
15. By Kevin O’ Sullivan
Made by Kevin O’ Sullivan. Checks if a user supplied number is an Armstrong number. ( Source )
Please enter a 3-digit number: 371 is an Armstrong number!
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Armstrong
{
static void Main(string[] args)
{
Console.WriteLine("Please enter a 3-digit number: ");
string num = Console.ReadLine();
int n1 = Convert.ToInt32(Convert.ToString(num[0]));
int n2 = Convert.ToInt32(Convert.ToString(num[1]));
int n3 = Convert.ToInt32(Convert.ToString(num[2]));
if(Math.Pow(n1,3) + Math.Pow(n2,3) + Math.Pow(n3,3) == Convert.ToInt32(num))
{
Console.WriteLine("{0} is an Armstrong number!",num);
}
else
{
Console.WriteLine("{0} is not an Armstrong number...",num);
}
}
}
}
16. By Raza Haider
Made by Raza Haider. Program to print out all Armstrong numbers between 1 and 500. ( Source )
All Amstrong Numbers: Amstrong Number: 1 Amstrong Number: 153 Amstrong Number: 370 Amstrong Number: 371 Amstrong Number: 407
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("All Amstrong Numbers: \n");
int d1, d2, d3;
int num = 001;
int temp;
while(num <= 500)
{
d1 = num - ((num / 10) * 10);
d2 = (num / 10) - ((num / 100) * 10);
d3 = (num / 100) - ((num / 1000) * 10);
temp = (d1 * d1 * d1) + (d2 * d2 * d2) + (d3 * d3 * d3);
if(temp == num)
Console.WriteLine("Amstrong Number: "+ temp);
num++;
}
}
}
}
17. By Hans Larry
Made by Hans Larry. ( Source )
407 ArmStrong number
using System;
public class Test
{
public static void Main()
{
int x=Convert.ToInt32(Console.ReadLine());
double top=0;
string st=x.ToString();
string ch;
for (int i=0; i<st.Length; i++)
{
ch=st [i].ToString();
top+=Math.Pow(Convert.ToInt32(ch),st.Length);
}
if (top==x)
Console.WriteLine("ArmStrong number"); else
Console.WriteLine("Not ArmStrong number");
}
}18. By Tyrone Kruger
Made by Tyrone Kruger. ( Source )
You entered 69 and it is not an Armstrong number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn{
class Program{
static void Main(string[] args){
var n=Convert.ToInt32(Console.ReadLine());
Console.Write("You entered {0} and it is{1}an Armstrong number.",n,(stro(n))?" ":" not ");
}
static bool stro(int x){
int sum=0;
foreach(char c in Convert.ToString(x)){
sum+=(c-'0')*(c-'0')*(c-'0');
}
return sum==x;
}
}
}
19. By Silvio Duka
Made by Silvio Duka. C# program that finds all the Armstrong numbers that are between a given range. ( Source )
The number 153 is an Armstrong number. The number 370 is an Armstrong number. The number 371 is an Armstrong number. The number 407 is an Armstrong number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ArmstrongNumberMedium
{
class Program
{
static void Main(string[] args)
{
int nFrom = 100; // Set a start number of range
int nTo = 999; // Set a end number of range
for (int number = nFrom; number <= nTo; number++)
{
int armstrong = 0;
int t = number;
while (t != 0)
{
armstrong += (int)Math.Pow(t % 10, 3);
t = t / 10;
}
if(number == armstrong) Console.WriteLine($"The number {number} is an Armstrong number.");
}
}
}
}20. By Sumit Pandey
Made by Sumit Pandey. ( Source )
92 is not Armstrong number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int n = Convert.ToInt32(Console.ReadLine());
int rem,sum=0;
int temp =n;
while(temp>0)
{
rem = temp%10;
sum = rem*rem*rem+sum;
temp/=10;
}
if (n==sum)
{
Console.WriteLine("{0} is Armstrong number.", sum);
}
else
{
Console.WriteLine("{0} is not Armstrong number.", sum);
}
}
}
}
21. By vaidyanathan s
Made by vaidyanathan s. ( Source )
Armstrong Number ------------------------------ Enter the Start Number : 1 Enter the End Number : 999 Inputs between 1 and 999 are : 1 2 3 4 5 6 7 8 9 153 370 371 407
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
/* int StartNumber;
int EndNumber;*/
static void Main(string[] args)
{
Console.Write("Armstrong Number\n");
Console.Write("------------------------------\n");
Console.Write("Enter the Start Number :");
int StartNumber = int.Parse(Console.ReadLine());
Console.WriteLine($" {StartNumber} \n");
Console.Write("Enter the End Number :");
int EndNumber = int.Parse(Console.ReadLine());
Console.WriteLine($" {EndNumber} \n");
Console.WriteLine($"Inputs between {StartNumber} and {EndNumber} are : ");
for (int i = StartNumber; i <= EndNumber; i++)
{
if (IsArmstrongNumber(i))
Console.WriteLine(i);
}
Console.ReadLine();
}
static bool IsArmstrongNumber(int number)
{
int sum = 0;
int temporaryNumber = number;
int temp = 0;
int length = number.ToString().Length;
while (number != 0)
{
temp = number % 10;
number = number / 10;
sum += (int)Math.Pow(temp, length);
}
if (sum == temporaryNumber)
{
return true;
}
else
{
return false;
}
}
}
}
22. By Rajvi Sarvaiya
Made by Rajvi Sarvaiya. Program to find if a number is Armstrong or it is not. ( Source )
371 is an Armstrong number.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int n = int.Parse(Console.ReadLine());
//get the addition of cubes
int sum=0,x;
for(int i =n;i>0;)
{
x=i%10;
sum = sum + (x*x*x);
i=i/10;
}
//if sum is same as n then itis armstrong no
if(sum == n)
Console.Write("{0} is an Armstrong number.",n);
else
Console.Write("{0} is not an Armstrong number.",n);
}
}
}