[C++][POO] Cuvinte palindromice

#include <iostream>
#include <fstream>
#include <string.h>

using namespace std;

ifstream f("date.in");
int k;
class PALINDROM
{
    public:
        char cuv[20], aux[20];
        void prelucrare(int &);
};

void PALINDROM :: prelucrare(int &k)
{

    k = 0;
    while ( f >> cuv )
    {
        strcpy(aux, cuv);
        strrev(aux);
        if(strcmp(aux, cuv) == 0)
            k ++;
    }
}

int main()
{
    PALINDROM obj;
    obj.prelucrare(k);
    cout << k;
    return 0;
}