Question

C++ code: **Please show me a way to do this without the use of pointers**

Build two grids which are each X wide and Y long where X and Y are user inputs to determine the size of the grids. Fill each cell of both grids with a ‘0’. Randomly fill 1/3 of the grid’s cells with a ‘1’. You must randomly fill each of the two grids separately so they do not have the all of the same squared filled with a ‘1’. Compare the two grids (square by square comparison) to find squares which have a ‘1’ in both grids. Create a third grid which contains a ‘1’ in squares where both of the compared grids contain a ‘1’ and has a ‘0’ in any other square.

Example in a 2 by 2 grid:

0	0
1	1

Grid 1

1	0
1	0

Grid 2                         

0	0
1	0

Grid 3 (Result)

For this assignment, you will need to create a Grid Class and the appropriate member functions and member variables to perform the above operations. Also, please demonstrate the usage of the Grid class and its methods from main function.

Answer 1

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//Include the required

//header files.

#include <iostream>

#include <cstdlib>

#include <cmath>

//Use the standard

//namespace.

using namespace std;

//Define the maximum

//size of the grid.

#define MAX_GRID_SIZE 100

//Define the

//class Grid.

class Grid

{

    private:

    //Declare an array to

    //store the grid values.

    int grid[MAX_GRID_SIZE][MAX_GRID_SIZE];

    //Declare the variables

    //to store the values

    //of X and Y.

    int x;

    int y;

    public:

    //Define the

    //parametrized constructor.

    Grid(int x_val, int y_val)

    {

        //Set the values

        //of x and y.

        x = x_val;

        y = y_val;

       

        //Fill the grid

        //with zeroes.

        fill_zeroes();

    }

    //Define the function get_val().

    int get_val(int x_val, int y_val)

    {

        //Return the value present

        //at the (x_val,y_val) co-ordinates.

        if(x_val < x && y_val < y)

        {

            return grid[x_val][y_val];

        }

        

        //If the reieved co-ordinates

        //are outside the grid then,

        //return -1.

        return -1;

    }

    //Define the function

    //set_val().

    void set_val(int x_val, int y_val, int val)

    {

        //If the recived co-ordinates

        //are valid then, set the value.

        if(x_val < x && y_val < y)

        {

            grid[x_val][y_val] = val;

        }

    }

    //Define the function

    //fill_zeroes().

    void fill_zeroes()

    {

        //Run the loop to fill

        //the grid with zeroes.

        for(int i=0; i<x; i++)

        {

            for(int j=0; j<y; j++)

            {

                grid[i][j] = 0;

            }

        }

    }

    //Define the

    //function display_grid().

    void display_grid()

    {

        cout << endl;

        for(int i=0; i<x; i++)

        {

            for(int j=0; j<y; j++)

            {

                cout << grid[i][j] << " ";

            }

            cout << endl;

        }

        cout << endl;

    }

};

//Define the

//main() function.

int main() {

    //Set the seed value

    //of the random function.

    srand(time(NULL));

    //Declare the

    //required variables.

    int x;

    int y;

    int total_values_by_3;

    //Prompt the user to

    //enter the value of 'X'.

    cout << "Enter the value of X: ";

   

    //Read and store

    //the value of 'X'.

    cin >> x;

    //Prompt the user to

    //enter the value of 'Y'.

    cout << "Enter the value of Y: ";

    //Read and store

    //the value of 'Y'.

    cin >> y;

    //Calculate the 1/3

    //of the total values.

    total_values_by_3 = ceil((x*y)/3.0);

    //Define the objects

    //of the grid class.

    Grid grid1(x, y);

    Grid grid2(x, y);

    Grid grid3(x, y);

    //Run the loop to fill

    //1/3 of total values

    //of grid 1 with 1.

    for(int i=0; i<total_values_by_3; i++)

    {

        int rand_x = rand()%x;

        int rand_y = rand()%y;

        grid1.set_val(rand_x, rand_y, 1);

    }

    //Run the loop to fill

    //1/3 of total values

    //of grid 2 with 1.

    for(int i=0; i<total_values_by_3; i++)

    {

        int rand_x = rand()%x;

        int rand_y = rand()%y;

        grid2.set_val(rand_x, rand_y, 1);

    }

    //Run the loop to check the

    //grid values of the grid 1

    //and the values of grid 2.

    for(int i=0; i<x; i++)

    {

        for(int j=0; j<y; j++)

        {

            int grid1_val = grid1.get_val(i, j);

            int grid2_val = grid2.get_val(i, j);

            //If both the grids have

            //the value 1 at the

            //current square then, set

            //the value of the respective

            //square of grid as 1.

            if(grid1_val == 1 && grid2_val == 1)

            {

                grid3.set_val(i, j, 1);

            }

        }

    }

    //Display the grid 1.

    cout << "Grid 1:"<<endl;

    grid1.display_grid();

    //Display the grid 2.

    cout << "Grid 2:"<<endl;

    grid2.display_grid();

    //Display the grid 3.

    cout << "Grid 3:"<<endl;

    grid3.display_grid();

    //Return from the

    //main() function.

    return 0;

}