c strong number Archives - C Program Examples

Write a C Program to find 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.
Example: 145 since 1! + 4! + 5! = 1 + 24 + 120 = 145.
Read more about C Programming Language .

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#include<stdio.h>
#include<conio.h>

int main()
{
 int num,i,f,r,sum=0,num1;
 clrscr();
 printf("Enter a number: ");
 scanf("%d",&num);

 num1=num;
 while(num){
  i=1,f=1;
  r=num%10;

  while(i<=r){
   f=f*i;
   i++;
  }
  sum=sum+f;
  num=num/10;

 }
 if(sum==num1)
  printf("%d is a strong number",num1);
 else
  printf("%d is not a strong number",num1);
 getch();
 return 0;

}

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