Programming Forums - DOS Minesweeper

Printing the grid works, and in general the array structures and everything updates as it should, random mines are generated; but no matter which square you choose, it CHANGES that square to a mine then says you lose cause you selected a mine; even if it wasnt originally a mine
i have narrowed it down to the bolded function; again, initially about 30% of the squares are mines, and when you click on a mine it works properly, when you select a mineless square it changes it to a mine and says you lose, when it should just continue the game (ill implement neighbor function later once this works)

#include<iostream>

#include<cstdlib>

#include<ctime>

#include<string>



using namespace std;

void initialize();

void paint();

string matrix[100];

int mine[100];

void updatematrix(int r, int c);

int main()

{

    initialize();

    int rguess;

    int cguess;

    paint();

    while(1) 

    {

             cout <<"Enter row of square to open (0-9)";

             cin >> rguess;

             cout <<"Enter column of square to open (0-9)";

             cin >> cguess;

             updatematrix(rguess,cguess);

    }

    system("PAUSE");

    return 0;

}



void paint()

{

     int i=0;

    for (int row=10; row>0; row--)

    {   

        for (int column=10; column>0; column--)

        {

            cout <<matrix[i];

            cout <<mine[i];

            i++;

        }

        cout<<"\n";

    }      

}

void initialize()

{

     bool a;

     int b;

     srand( (unsigned int) time( NULL ) );

     int c=0;

     while (c<100) 

     {

           matrix[c]="|_|";

           b= rand()%10+1;

           if (b<3){a=1;}

           else {a=0;}

           mine[c]=a;

           c++;   

     }

}

void updatematrix(int r, int c)

{

     int square =r*10 + c;

     if (mine[square]=1)

     {cout <<"You lose";}

     else if (mine[square]=0) 

     {matrix[square]="|X|";}

     paint();

}

edit: the only reason the paint() function prints the mine value of each square was for testing to see which squares were mines...