Bermain Tic Tac Toe

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

string winner = "";

void cek(char c) {
    if (c == 'O') winner = "Aneb";
    else if (c == 'X') winner = "Amar";
}
int main() {
    char c[3][3];
    bool isFull = true;
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < 3; j++) {
            cin >> c[i][j];
            if (c[i][j] == '*') isFull = false;
        }
    }
    for (int i = 0; i < 3; i++) {
        if (c[i][0] == c[i][1] && c[i][1] == c[i][2]) {
            cek(c[i][0]);
        }
        if (c[0][i] == c[1][i] && c[1][i] == c[2][i]) {
            cek(c[0][i]);
        }
    }
    if (c[0][0] == c[1][1] && c[1][1] == c[2][2]) {
        cek(c[1][1]);
    }
    if (c[2][0] == c[1][1] && c[1][1] == c[0][2]) {
        cek(c[1][1]);
    }
    if (winner != "") cout << winner << " Menang";
    else {
        if (isFull) cout << "Seri";
        else cout << "Permainan Belum Selesai";
    }
}