Sum of two numbers using for loop | C program

#include <stdio.h>
int main()
{
 int no, sum;
 
 printf("Please enter a number: ");
 scanf("%d",&no);
 
 for(s=0;no>0;no=no/10)
 {
  sum = sum + no%10;
 }
 
 printf("Sum of digits is: %d", sum);
 return 0;
}

Bhuvan Arora