Tick-Tack-Toe

#include "Header.h"

TTT::TTT()
{
    for(int i=0; i<fild+1; i++)
        m_tttFild[i] = '*';
}

bool TTT::isWin(const char &mark)
{
    if((m_tttFild[1] == mark) && (m_tttFild[4] == mark) && (m_tttFild[7] == mark))
        return true;
    if((m_tttFild[2] == mark) && (m_tttFild[5] == mark) && (m_tttFild[8] == mark))
        return true;
    if((m_tttFild[3] == mark) && (m_tttFild[6] == mark) && (m_tttFild[9] == mark))
        return true;
    if((m_tttFild[1] == mark) && (m_tttFild[2] == mark) && (m_tttFild[3] == mark))
        return true;
    if((m_tttFild[4] == mark) && (m_tttFild[5] == mark) && (m_tttFild[6] == mark))
        return true;
    if((m_tttFild[7] == mark) && (m_tttFild[8] == mark) && (m_tttFild[9] == mark))
        return true;
    if((m_tttFild[1] == mark) && (m_tttFild[5] == mark) && (m_tttFild[9] == mark))
        return true;
    if((m_tttFild[3] == mark) && (m_tttFild[5] == mark) && (m_tttFild[7] == mark))
        return true;
    return false;
}

bool TTT::putMark(const int &putPlace, const char &mark)
{
    if(m_tttFild[putPlace] == '*'){
        m_tttFild[putPlace] = mark;
        return true;
    }
        return false;
}

const std::string TTT::solve(const std::string& input)
{
    for(int i=0; i<input.size() && i<fild; i++){
        if(i%2==0){
            if(!putMark((int)(input.at(i) -'0'), 'o')){
                return "Foul : x won.";
            }
            if(isWin('o')){
                return "o won.";
            }
        }
        if(i%2==1){
            if(!putMark((int)(input.at(i) -'0'), 'x')){
                return "Foul : o won.";
            }
            if(isWin('x')){
                return "x won.";
            }
        }
    }
    return "Draw game.";
}

int main()
{
    const std::string input = "35497162193";
    TTT ttt;
    std::cout << ttt.solve(input) << std::endl;
    return 0;
}

#ifndef _HEADER_H
#define _HEADER_H

#include <string>
#include <iostream>

#define fild 9

class TTT
{
public:
    TTT();
    const std::string   solve(const std::string& input);
private:
    char m_tttFild[fild+1];
    bool isWin(const char &mark);
    bool putMark(const int &putPlace, const char &mark);
};

#endif