#include <iostream>

using namespace std;

const size_t ROWS = 4;
const size_t COLS = 3;

typedef char BoardT[ROWS][COLS];

void DrawBoard(const BoardT board);
// this will work, but I feel the other is cleaner.
void InitBoard(char board[ROWS][COLS]);

void FillPosition(BoardT board, size_t row, size_t col, char letter);

int main() {
    BoardT board;

    InitBoard(board);
    DrawBoard(board);

    cout << "Placing A at (3,0)" << endl;
    FillPosition(board, 3,0,'A');
    cout << "Placing A at (0,1)" << endl;
    FillPosition(board, 0,1,'A');
    cout << "Placing A at (5,5)" << endl;
    FillPosition(board, 5,5,'A');

    cout << endl;
    DrawBoard(board);

    return 0;
}

void FillPosition(char board[ROWS][COLS], size_t row, size_t col, char letter){
    if (row <ROWS) {
       if (col < COLS) {
           board[row][col] = letter;
       } else {
          cout << col << " out of range for colums, should be between 0 and "
               << COLS << endl;
       }
    } else {
       cout << row << " out of range for rows, should be between 0 and "
            << ROWS << endl;
    }

    return;
}

void InitBoard(BoardT board){
   size_t r,c;

   for(r=0;r<ROWS;r++) {
      for(c=0;c<COLS;c++) {
          board[r][c] = 'X';
      }
   }

   return;
}


void DrawBoard(const BoardT board){
   size_t r,c;

   for(r=0;r<ROWS;r++) {
      for(c=0;c<COLS;c++) {
          cout << board[r][c];
      }
      cout << endl;
   }

   return;
}