Minesweeper Help

[sfxhewitt]

I have a grid, and now I need to put bombs in some places randomly, I've tried looking at other peoples version, but I can't figure it out. I would like the grid to be empty and when choosing coordinates if the square is empty then I want it to show an O and if it's a bomb to reveal an X, any help would be great.

#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;





int main()

{
	//void printgrid(int Rows = 8, int Columns = 8);
	int Rows = 8;
	int Columns = 8;



// Top Row Numbers
int i = 1, j;
for (j = 0; j <= 4 * Columns; j++) {
	if (j % 4 == 2)
		cout << i++;
	else cout << " ";
}
cout << endl;

//Left Side Numbers
for (i = 0; i <= 2 * Rows; i++) {
	if (i % 2 != 0)
		cout << (char)(i / 2 + '1');
	for (j = 0; j <= 2 * Columns; j++) {
		if (i % 2 == 0)
		{
			if (j == 0)
				cout << " ";
			if (j % 2 == 0)
				cout << " ";
			else cout << "---";
		}
		else {
			if (j % 2 == 0)
				cout << "|";
			else cout << "   ";
		}
	} //Right Side Numbers
	if (i % 2 != 0)
		cout << (char)(i / 2 + '1');
	cout << endl;
}


//Bottom Numbers
cout << " ";
for (j = 0, i = 1; j <= 4 * Columns; j++) {
	if (j % 4 == 2)
		cout << i++;
	else cout << " ";
}
cout << endl;


	cout <<Rows << Columns;

	return 0; }

[jonnin]

you *draw* a grid but you don't seem to logically *store* a grid.
I think youll want a construct that represents the board, maybe
bool board[8][8];
and then set say 10 of them to true at random.
then when you print the board refer to this structure on whether to print an X or not when you draw the board. (this is typical -- you often in games keep the drawing of something and the data for it totally separated).

[sfxhewitt]

Could you show me how I'm very new to this

[jonnin]

work this into your code.

#include <random>
int main()
{
    const int boardsize = 8;  //constants belong in a single place, with a name, 
                                        //not in code as 8 100 times.
    const int nummines = 10;
     //declare your board structure. 
    bool board[boardsize][boardsize]; //this should be vectors if you know them 
    int r,c; //rows and columns
    for(r = 0; r< boardsize; r++) //explicit assignment, there are shortcuts you could take
     for(c = 0; c< boardsize; c++)
           board[r][c] = false; 

     int count = 0; 
     std::default_random_engine generator; //set up random numbers
     std::uniform_int_distribution<int> distribution(0,boardsize-1)
     while (count < nummines)
     {
            r =  distribution(generator); //get a random row and column
            c =  distribution(generator);
             if(!board[r][c])   //just in case we get duplicates at random
                 {
                    board[r][c] = true; 
                    count ++;
                 }
     }      
}

see if you can get that working. as nummines approaches the total number of locations in the board, the loop may become a problem. for only 10 out of 64, its fine. if it were 60 out of 64, it would sit there getting repeats for a long time potentially, see? If that is an issue we can talk about a better way.