# Miscellaneous Program(Armstrong Number)

• April 8, 2022
• C

An Armstrong number is an n-digit number whose sum of digits raised to the nth power equals the number itself.

Take, for example, the Armstrong number 153, which is a three-digit number; 1^3 + 5^3 + 3^3 equals 1 + 125 + 27, which equals 153.

A program to find Armstrong numbers between 1 and 500 is provided below.

``````#include<stdio.h>
#include<math.h>

int main()
{

int n,sum,i,t,a;
printf("\nThe Armstrong numbers in between 1 to 500 are : \n");

for(i = 1; i <= 500; i++)
{
t = i;  // as we need to retain the original number
sum = 0;
while(t != 0)
{
a = t%10;
sum += a*a*a;
t = t/10;
}

if(sum == i)
printf("\n\t%d", i);
}

return 0;
}``````

Output:

``````The Armstrong numbers in between 1 to 500 are :

1
153
370
371
407``````

Note: also read about the Miscellaneous Program(reverse the case of input string)

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