C program to check if number is Strong number or not

Explanation:

A strong number is a number whose sum of factorial digits is equal to number itself.

e.g: 145

1!+4!+5!=1 + 24 + 120 = 145

So, 145 is a strong number.

Program:

#include<stdio.h>

int main()

{

int n,num,i,temp,sum=0,fact=1;

printf("\nEnter number to be checked: ");

scanf("%d",&n);

num=n;

while(num!=0)

{

          i=(int)num%10;

          while(i>1)

                    {

                    fact=fact*i;

                    i--;

                    }

          sum=sum+fact;

          fact=1;

          num=(int)num/10;

}

if(n==sum)

{

          printf("\nStrong Number");

}

else

{

          printf("\nNot Strong Number");

}

return 0;

}
Output: