UVA Solution for 458

//458
#include<stdio.h>
int main()
    {
     char ch,x;
     while(scanf("%c",&ch)==1)
          {
           if(ch=='\n')
           printf("\n");
           else
               {
                x=ch-7;
                //to code x=ch+7;
                printf("%c",x);
               }
          }                   
    return 0;
    }