PROGRAM TO FIND WHETHER THE GIVEN NUMBER IS STRONG OR NOT

PROGRAM TO FIND WHETHER THE GIVEN NUMBER IS STRONG OR NOT

A NUMBER IS CALLED STRONG NUMBER IF SUM OF THE FACTORIAL OF ITS DIGIT IS EQUAL TO NUMBER ITSELF

FOR EXAMPLE: 145

I FACTORIAL IS 1

4 FACTORIAL IS 24

5 FACTORIAL IS 120

THEREFORE 1 + 24 +120 =  145 

PROGRAM:

 // prg to illustrate strong number

#include<stdio.h>

void main()
{
 int n,i,r,sum=0,temp,fact;
 printf("enter any number:");
 scanf("%d",&n);
 temp=n;
 while(n != 0)
  {
   i=1,fact=1;
   r=n %10;
   while(i <= r)
     {
      fact = fact * i;
      i++;
     }
     sum=sum +fact;
     n = n /10;
  }
  if(sum==temp)
    printf("%d is a strong number \n",temp);
  else
    printf("%d is not a strong number \n",temp);
}

output: