Easy learning with example program codes

C program to check for an Armstrong number

The below program checks for an Armstrong number using a loop. The C printf statement is used to output the result on the screen. A number is called as an Armstrong number if the sum of the cubes of its digits is equal to the number itself.

Armstrong Number:
abc = (a*a*a) + (b*b*b) + (c*c*c)

Example: 0, 1, 153, 371, 407, etc.

C program to check for an Armstrong number

#include <stdio.h>
void main()
int num,x;
int sum = 0;    
printf("Enter a number:");    
int i = num;
x = i%10;  
sum= sum + x*x*x;  
i = i/10;  
printf ("%d is an Armstrong Number.", num);  
printf ("%d is not an Armstrong Number.", num);  


Enter a number:407
407 is an Armstrong Number.
Posted in C   
Sign Up/ Sign In
Ask a Question

Industrial Training

We offers Placement Oriented Training on Java, Spring, JSF, Hibernate, PHP, AngularJS, Angular 4, PLSQL, Oracle BI Publisher etc. We also provides Online training, please mail us at


We also provides the Development services for Website Development , Java Development, PHP Development, Android App Development etc. You can contact us on

Copyright © 2018 CodesJava Protection Status SiteMap Reference: Java Wiki