Armstrong Number In C

An Armstrong number is a three digits( 0-999 ) integer number,each digit cubes of the sum  is equal to the number itself. Armstrong numbers : 0,1,153,370,371,407.


Example : " ^  " power sign . e.g : 2^3=2*2*2=8

1. 0^3=0
2. 1^3=1
3. 1^3+5^3+3^3=153
4. 3^3+7^3+0^3=370
5. 3^3+7^3+1^3=371
6. 4^3+0^3+7^3=407

To Check Whether Given  Number  Is Armstrong or Not : 

Program :

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int n,b,am=0,c,d,p,e;
char ch;
do{

    clrscr();
    printf("\n\t Enter no(0-999):");
    scanf("%d",&n);
    d=e=n;
    for(b=0;n>0;b++)
    {
        n=n/10;
    }

    while(d>0)
    {
        c=d%10;
        p=pow(c,b);
        am=am+p;
        d=d/10;
    }
     if(am==e)
           printf("\n\t <%d> Armstrong Number",e);
    else
          printf(" \n\t<%d> Not Armstrong Number",e);

          printf("\n\t Continue(y/n) :");

ch=getch();
}while(ch=='Y'||ch=='y');
}

Output :

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