#include <stdio.h>

int main(void)
{
   int num1, num2, digit, numOut;



    printf("Enter a three-digit number: ");
    scanf("%d", &num1);
    printf("%d", num1);



   if(num1<100 || num1>999)
   {

       printf("Error : The number you have entered is not a three-digit number.\n");



       return 0;
   }



      while(num1>0)
   {

       digit = (num2+6)%10;
       num2 = num1%10;


       if(num1>100)
           numOut = digit;

       else if(num1>10)
           numOut = (digit*10)+numOut;

       else
           numOut = (digit*100)+numOut;

       num1 / 10;
   }


   printf("Output: %d\n", numOut);

   return 0;
}