What is Armstrong number?
Sum of a number’s digits raised to the power total number of digits is armstrong number.
Armstrong numbers example: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 153, 370, 371, 407, 1634 etc
Explanation:
3 = 3^1 = 3
153 = 1^3 + 5^3 + 3^3 = 153
Non-Armstrong numbers:
156 = 1^3 + 5^3 + 6^3 . This value is equal to 342. So, 156 is not an armstrong number
C program to find whether a number is Armstrong number or not:
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#include <stdio.h> int main() { int n, sum = 0, t, remainder; printf("\nPlease enter a number to find whether it is an armstrong or not"); scanf("%d",&n); t = n; while( t != 0 ) { remainder = t%10; sum = sum + remainder*remainder*remainder; t = t/10; } if ( n == sum ) printf("\nThe number %d is an armstrong number", n); else printf("\nThe number %d is not an armstrong number", n); return 0; } |