«

Armstrong Number Coding in PHP

In this post, you will learn Armstrong number & its uses in PHP. Armstrong number is a number that is equal to the sum of cubes of its digits.



Armstrong number is a number that is equal to the sum of cubes of its digits

Armstrong Number program in PHP

Code Sinnpet of Armstrong Number in PHP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
  <?php
  $num=150;
  $sum=0;
  $temp=$num;
  while($temp!=0)
  {
  $rem=$temp%10;
  $sum=$sum+$rem*$rem*$rem;
  $temp=$temp/10;
  }
  if($num==$sum)
  {
  echo "Armstrong number";
  }
  else
  {
  echo "This is not an Armstrong number";
  }
  ?>
 
 

Output – This is not an Armstrong number

Some examples of Armstrong Number

0, 1, 153, 370, 371, and 407 are the Armstrong numbers.



Test 371. Three digits. 3^3 + 7^3 + 1^3 = 27 + 343 + 1 = 371. Armstrong number.

Test 1634. Four digits. 1^4 + 6^4 + 3^4 + 4^4 = 1 + 1296 + 81 + 256 = 1634. Armstrong number.

There are no 2-digit Armstrong numbers.



There are four 3-digit Armstrong numbers.

There are two 4-digit Armstrong numbers



Tags: ,
«