Question

For a game that takes user input of certain letters, Upper: O,C,I,Z; Lower: o,c,i,z. The board is a 4 by 4 matrix and the numbers on the right are the positon that correspond with the dots. So if player 2 statisfies the requirement for the winning condition. Winning conditions being 4 letters in a row of (all upper case-- Z I C O ), (all straight-line-- Z I i I), (all consonants - Z z C c), (all curved-- C o O c), (all vowels-- I i O o). Using C++, how does one create a function that returns if there winning condition in the board.

      ---------    Square #  
     | . . . . |  1  2  3  4 
     | o I i O |  5  6  7  8 
     | . . . . |  9 10 11 12 
     | . . . . | 13 14 15 16 
      --------- 

^^ this shows a possible winning move. You can win with a row or a column or diagonal or corners if it matches winning conditions. So you can also win if those letters were vertically or diagonally or even in four corners.

Answer 1

Screenshot

Program

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

//Function prototype
bool checkWinner(char board[4][4]);
int main()
{
   //Test board
   char board[4][4] = { {'.','.','.','.'},{'o','I','i','O'},{'.','.','.','.'},{'.','.','.','.'} };
   //Check winner
   if (checkWinner(board)) {
       cout << "Game completed!!!\n";
   }
   else {
       cout << "Game not completed!!!\n";
   }
}
//Function check winning condition
bool checkWinner(char board[4][4]) {
   string str = "";
   string winningStr1 = "ZICO", winningStr2 = "ZIiI", winningStr3 = "ZzCc", winningStr4 = "CoOC", winningStr5 = "IiOo";
   //Horizontal check
   for (int i = 0; i < 4; i++) {
       str = "";
       for (int j = 0; j < 4; j++) {
           str += board[i][j];
       }
       if (str == winningStr1 || str == winningStr2 || str == winningStr3 || str == winningStr4 || str == winningStr5) {
           return true;
       }
   }
   //Vertical check
   for (int i = 0; i < 4; i++) {
       str = "";
       for (int j = 0; j < 4; j++) {
           str += board[j][i];
       }
       if (str == winningStr1 || str == winningStr2 || str == winningStr3 || str == winningStr4 || str == winningStr5) {
           return true;
       }
   }
   //Diagonal
   str = "";
   for (int j = 0; j < 4; j++) {
       str += board[j][j];
   }
   if (str == winningStr1 || str == winningStr2 || str == winningStr3 || str == winningStr4 || str == winningStr5) {
       return true;
   }
   //Backword
   str = "";
   for (int j = 3; j >=0; j--) {
       str += board[j][j];
   }
   if (str == winningStr1 || str == winningStr2 || str == winningStr3 || str == winningStr4 || str == winningStr5) {
       return true;
   }
   return false;
}