#include <stdio.h>
   #include <conio.h>  
 void main( )  
 {
 int num,k;  
 /************found************/  
   _____(1)_____;   
  printf("Please enter a number:") ;
    scanf("%d",&num) ;   
 do   
  { k*=num%10 ;  
 /************found************/      
 _____(2)____;   
  } while(num) ;
    printf("\n%d\n",k) ;
   }