Tic-tac-toe Winner — C++ Fundamentals

Given

You’re given two supporting functions as part of the starter code:

printBoard receives a 3x3 array representing a tic-tac-toe board, and displays it.
printWinner receives a character representing the winner, and displays the winner.

Task

Your task is to write a function check_winner that takes a 3x3 char board and returns:

'X' if there are three cells in a line containing 'X' (row, column, or diagonal).
'O' if there are three cells in a line containing 'O'.
' ' (space) if there’s no winner yet.

#include <iostream>void printBoard(char board[3][3]); // Implemented below as part of starter codevoid printWinner(char winner); // Implemented below// TODO: declare check_winner hereint main() { char board1[3][3] = { {' ', 'O', 'X'}, {'O', 'X', ' '}, {'X', ' ', ' '} }; printBoard(board1); char w1 = check_winner(board1); printWinner(w1); // Expected: X wins! (Anti-diagonal) char board2[3][3] = { {' ', ' ', ' '}, {'X', 'X', 'X'}, {'O', 'O', ' '} }; printBoard(board2); char w2 = check_winner(board2); printWinner(w2); // Expected: X wins! (Second row)}void printBoard(char board[3][3]) { for (int row = 0; row < 3; ++row) { for (int col = 0; col < 3; ++col) { std::cout << board[row][col]; if (col < 2) std::cout << " | "; } std::cout << "\n"; if (row < 2) std::cout << "---------\n"; } std::cout << "\n";}void printWinner(char winner) { if (winner == ' ') { std::cout << "No winner yet\n\n"; } else { std::cout << winner << " wins!\n\n"; }}