#include <time.h>
#include <stdlib.h>
#include <iostream>
#include <fstream>

// Created by D. Levi, Feb 2001
// Modified by I. Markov

int main()
{
	unsigned n=0;
	cout << "Enter size of map "<< endl;
        while(n<4)
        {
           cout << "Please choose a number more than 3 : ";
	   cin >> n;
        }
	ofstream outFile("maze.txt");
        if (!outFile) { cerr << "Cannot open file maze.txt" << endl; exit(1); }
	outFile << n << endl;
	srand(time(0));  // seed the RNG with Unix time 
                         // man -s 2 time for more info (on Linux: man s 2 time)
        outFile <<"OX" ;
        unsigned i,j;  
	for (i=2; i < n; i++)   outFile << 'X';
	outFile << endl;
	for (i = 0; i < n; i++) outFile << ' ';
	outFile << endl;

	for (i = 0; i < n-4; i++)
	{
		for (j = 0; j < n; j++)
		{
			if ( (rand() % 9 + 1) > 4 ) outFile << ' ';
			else                        outFile << 'X';
		}
		outFile << endl;
	}
	for (i = 0; i < n; i++)   outFile << ' ';
	outFile  << endl;

	for (i = 0; i < n-2; i++) outFile << 'X';
        outFile<<"CX"<< endl;
        outFile.close();
        cout << " A new maze is ready in maze.txt" << endl;
}