tic tac toe v1

// Made 2 days after I started learning C++

#include <iostream>
#include <string>
using namespace std;


int arr[3][3] = {{0,0,0},{0,0,0},{0,0,0}};

string najdiSimbolOdBroj(int x) {
    string symbol;
    switch (x) {
        case 1:
            symbol = "X";
            break;
        case 2:
            symbol = "O";
            break;
        default:
            symbol = "?";
    }
    return symbol;
}

void printajTabla() {
    cout << "-----------" << endl;
    for (int a=0; a<3; a++) {
        cout << "|";
        for (int b=0; b<3; b++) {
            string symbol = najdiSimbolOdBroj(arr[a][b]);
            cout << " " << symbol << " ";
        }
        cout << "|\n";
    }
    cout << "-----------" << endl;
}

int imaKombinacija(int x) {
    return
       ((arr[0][0] == x && arr[0][1] == x && arr[0][2] == x) || // xxx ??? ???
        (arr[1][0] == x && arr[1][1] == x && arr[1][2] == x) || // ??? xxx ???
        (arr[2][0] == x && arr[2][1] == x && arr[2][2] == x) || // ??? ??? xxx
        (arr[0][0] == x && arr[1][0] == x && arr[2][0] == x) || // x?? x?? x??
        (arr[0][1] == x && arr[1][1] == x && arr[2][1] == x) || // ?x? ?x? ?x?
        (arr[0][2] == x && arr[1][2] == x && arr[2][2] == x) || // ??x ??x ??x
        (arr[0][0] == x && arr[1][1] == x && arr[2][2] == x) || // x?? ?x? ??x
        (arr[2][2] == x && arr[1][1] == x && arr[0][0] == x));  // ??x ?x? x??
}

int imaPobednik() {
    if (imaKombinacija(1)) {
        return 1;
    } else if (imaKombinacija(2)) {
        return 2;
    } else {
        return 0;
    }
}

int smeni(int a, int b, int x) {
    if (arr[a][b] == 0) {
        arr[a][b] = x;
        return 1;
    } else {
        return 0;
    }
}

void novRed(int x) {
    int a;
    int b;
    string igrac = najdiSimbolOdBroj(x);
    cout << igrac << "'s turn to enter a row (1, 2, or 3)\n> ";
    cin >> a;
    cout << igrac << "'s turn to enter a column (1, 2 or 3)\n> ";
    cin >> b;
    int uspesno = smeni(a-1, b-1, x);
    if (!uspesno) {
        cout << "That space is already taken, try again." << endl;
        novRed(x);
    }
}

void novKrug(int x) {
    printajTabla();
    string igrac = najdiSimbolOdBroj(x);
    novRed(x);
    int pobednik = imaPobednik();
    if (pobednik != 0) {
        cout << igrac << " wins! Bravo!!!";
    } else {
        novKrug(x == 1 ? 2 : 1);
    }
}

int main() {
    novKrug(1);
}