cross and zero : )

cross_and_zero.cpp

#include <iostream>
using namespace std;

#define FIRST 'x'
#define SECOND '0'

char arr[3][3];

void check() {
    string horizontally, vertically, oblique, _oblique;

    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            horizontally += arr[i][j];
            vertically += arr[j][i];
        }

        oblique += arr[i][i];
        _oblique += arr[i][2 - i];

        if (horizontally == "xxx" || vertically == "xxx" || oblique == "xxx" ||
            _oblique == "xxx") {
            cout << "FIRST" << endl;
            break;
        }
        if (horizontally == "000" || vertically == "000" || oblique == "000" ||
            _oblique == "000") {
            cout << "SECOND" << endl;
            break;
        }

        horizontally = "";
        vertically = "";
    }
}

int main() {
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++)
            cin >> arr[i][j];
    }

    check();
}

/*
x x x
0 0 0
x x x
*/