Turbo C - Armstrong Numbers

---

An I have given here the program for finding armstrong number of a three digits number.

 

The condition for armstrong number is,

Sum of the cubes of its digits must equal to the number itself.

 

For example, 407 is given as input.

4 * 4 * 4 + 0 * 0 * 0 + 7 * 7 * 7 = 407 is an armstrong number.

 

Source Code

---

 

#include <stdio.h>

 

int main()

{

      int i, a, b, c, d;

      printf("List of Armstrong Numbers between (100 - 999):\n");

 

      for(i = 100; i <= 999; i++)

      {

            a = i / 100;

            b = (i - a * 100) / 10;

            c = (i - a * 100 - b * 10);

 

            d = a*a*a + b*b*b + c*c*c;

 

            if(i == d)

            {

                  printf("%d\n", i);

            }

      }  

      return 0;

}

 

 

 

Output

---

 

List of Armstrong Numbers between (100 - 999):
153
370
371
407

 

---

---