Mother bear

/// https://trello.com/c/nHWKxytW/71-uva-10945-mother-bear
/// https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=1886

#include <iostream>
#include <ctype.h>
using namespace std;

string validar (string pal)
{
    string validada;
    for  (int i=0; i<pal.size(); i++)
    {
        pal[i] = tolower(pal[i]);
        if ( ('a'<=pal[i]) && (pal[i]<='z') )
            validada += pal[i];
    }

    return validada;
}

bool palindromo (string pal)
{
    bool ban = 1;
    for (int i=0; i<pal.size()/2 && ban; i++)
        if( pal[i] != pal[pal.size()-i-1] )
            ban = false;

    return ban;
}

int main ()
{
    string pal;
    getline(cin,pal);

    int c=0;

    while (pal != "DONE")
    {
        // if (c) cout<<endl;
        c++;
        pal = validar(pal);
        if ( palindromo(pal) )
            cout<<"You won’t be eaten!"<<endl;
        else cout<<"Uh oh.."<<endl;
        getline(cin,pal);
    }

    return 0;
}