Untitled

#include <iostream>
#include <cstring>
#include <fstream>
#include <string.h>

using namespace std;

#define MAX_FILENAME_LEN 30

struct Maze
{
  char* cells;
  int width;
  int length;
};

void write_maze(Maze &maze);
void read_maze(bool &format_check, int &width, int &length, ifstream &maze_in);
void solve();
void open_input_file(ifstream &in, const char prompt[]);
void determine_size(ifstream &in, int &width, int &length, bool &format_check);

int main()
{

  ifstream maze_in;
  bool format_check = true;
  int width = 0; int length = 0; int index = 0;
  char ch;
  Maze maze;

  read_maze(format_check, width, length, maze_in);

  if(!format_check)
    {
      cout << "There is an error in your input file, please check the file and \
re-start program" <<  endl;
    }
  else
    {
      maze.width = width;
      maze.length = length;
      cout << "creating an array of size " << width * length << endl;
      maze.cells = new char[width * length];
      while(!maze_in.eof())
        {
          maze_in.get(ch);
          if(maze_in.eof())
           break;
          maze.cells[index] = ch;
          index++;
        }
      write_maze(maze);
    }
}

void write_maze(Maze &maze)
{
  int index = 0;

  cout << endl;
  cout << maze.length << " " << maze.width << endl;
  cout << maze.length * maze.width << endl;

  for(int row = 0; row < maze.length; row++)
    {
      for(int col = 0; col <= maze.width; col++)
        {
          cout << maze.cells[index];
          index++;
        }
    }
  cout << "\n";
  cout.flush();
}

void read_maze(bool &format_check, int &width, int &length, ifstream &maze_in)
{
  open_input_file(maze_in, "enter the name of the maze file           :");
  determine_size(maze_in, width, length, format_check);
  //to do: find start location
}

void open_input_file(ifstream &in, const char prompt[])
{
  bool success = false;
  char filename[MAX_FILENAME_LEN + 1];

  cout << prompt;
  cin.getline(filename, MAX_FILENAME_LEN + 1, '\n');

  in.open(filename);

  while(success == false)
    {
      if (in.fail())
        {
          cout << "couldn't open file" << endl;
          cout << prompt;
          cin.getline(filename, MAX_FILENAME_LEN + 1, '\n');
          in.open(filename);
          if(!in.fail())
            success = true;
        }
      else
        {
          success = true;
        }
    }
}

void determine_size(ifstream &in, int &width, int &length, bool &format_check)
{
  char line_in[100];
  int first_width;
  in.getline(line_in, 100, '\n');
  length++;
  first_width = strlen(line_in);
  while(!in.eof() && format_check)
    {
      in.getline(line_in, 100, '\n');
      length++;
      width = strlen(line_in);
      if(width != first_width)
        {
          format_check = false;
        }
    }
  width = first_width;
  in.clear();
  in.seekg(0, ios::beg);
}