probl 6

bool rimes(char* first_word, char* second_word, int n)
{

//    int l1 = strlen(first_word), l2 = strlen(second_word);
    if((int)strlen(first_word) < n) return false;
    if((int)strlen(second_word) < n) return false;

   // cout << first_word+(strlen(first_word)-n) << endl << second_word+(strlen(second_word)-n);
    if(strcmp(first_word+(strlen(first_word)-n), second_word+(strlen(second_word)-n)) == 0)
        return true;
    else
        return false;

}

void problema6(const char *input_file, const char *output_file)
{
    ifstream fin(input_file);
    ofstream fout(output_file);
    char s[4][101], v[4][100], elem[100];
    char chr[] = ".,?! ";
    unsigned int n;
    fin >> n;
    fin.get();
    for(unsigned int i = 0; i<4; i++)
    {
        fin.getline(s[i], 101);
        char *p;
        p = strtok(s[i], chr);

        while( p != NULL )
        {
            strcpy(elem, p);
            p = strtok(NULL, chr);
        }
        strcpy(v[i], elem);

        //fin.get();
    }

    if(rimes(v[0], v[1], n) == true && rimes(v[2], v[3], n) == true && rimes(v[0], v[2], n) == false && rimes(v[0], v[3], n) == false)
        fout << "A\n";
    else if(rimes(v[0], v[2], n) == true && rimes(v[1], v[3], n) == true && rimes(v[0], v[1], n) == false && rimes(v[0], v[3], n) == false)
        fout << "B\n";
    else if(rimes(v[0], v[3], n) == true && rimes(v[1], v[2], n) == true && rimes(v[0], v[1], n) == false && rimes(v[0], v[2], n) == false)
        fout << "C\n";
    else if(rimes(v[0], v[1], n) == true && rimes(v[0], v[2], n) == true && rimes(v[0], v[3], n) == true)
        fout << "D\n";
    else fout << "E\n";


    fin.close();
    fout.close();

}