poj1298 The Hardest Problem Ever

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
    char *p,s[201];
    while(cin.getline(s,100),strcmp(s,"ENDOFINPUT"))
    {
        if(!strcmp(s,"START")) continue;
        else if(!strcmp(s,"END")) continue;
        else{
            for(p=s;*p;p++)
                if(isupper(*p)) *p=(*p-44)%26+'A';
            cout<<s<<endl;
        }
    }
    return 0;
}