In this article, we will write a c program to check whether a given number is an Armstrong number or not.

Write a C Program to Check Whether Given Number Is Armstrong Number or Not

#include <stdio.h>

int main()
{
	int n, n1, rem, num = 0;
	printf("Enter a positive integer: ");
	scanf("%d", &n);
	n1 = n;
	while (n1 != 0)
	{
		rem = n1 % 10;
		num += rem *rem * rem;
		n1 /= 10;
	}
	if (num == n)
		printf("%d is an Armstrong number.", n);
	else
		printf("%d is not an Armstrong number.", n);
}

Input:

Enter a positive integer: 371

Output:

371 is an Armstrong number. 

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