OOP help with comparing 2D arrays with a class

[Marcos8701]

Hello out there!

I have an assignment that wants me to create two squares with the dimensions of the user input. Once I have the length and width inputs from the user I pass the info to my class which creates the square with a 2D array thats declared in my private member variables. I then fill the array with 1s and 0s.

My question is, once my I create two objects, or squares, of the same class how do I compare the two objects that are arrays and tell the compiler "if square one has a 1 in the same spot([row][column]) as square 2 then create a 3rd array and put a 1 in the same spot.

Here is my code. Thank you in advance.

//Grid.h

#ifndef OOP_HW3_GRID_H
#define OOP_HW3_GRID_H

class Grid {

private:

    int length, width;    //variables for size of grids

//    Initialize Array 
    static const int numRows = 20;  //rows for 2D Array
    static const int numCols = 20;  //columns for 2D Array
    int array1[numRows][numCols];    //Array of Grid One

public:

    Grid(); //Default Constructor
    Grid(int length, int width);    //initializes all length/width

//    Set Setters functions

//  set length of grids
    void setLength(int x1) { length = x1; }

//    Set Width of grids
    void setWidth(int y1) { width = y1; }

//    Set Getters functions

//  Get lengths of the 3 grids
    int getLength() { return length; }

//    Get Widths of the 3 grids
    int getWidth() { return width; }

//    Fill array
    void fillArray();  //Fills Array

//    Display array
    void displayArray();

};
#endif //OOP_HW3_GRID_H

//Grid.cpp

#include "Grid.h"
#include <iostream>
#include <cstdlib>
using namespace std;

Grid::Grid()
{
    length = 0;
    width = 0;
}

Grid::Grid(int _length, int _width)
{
    length = _length;
    width = _width;
}

//  Function fills array
void Grid::fillArray()
{


    for (int i = 0; i < length; i++)   //Fills row
        for (int j = 0; j < width; j++)   //Fills column
        {
            int randNum = rand() % 2;    //Generates random number divides by modulo of 2
            if (randNum == 1 || randNum == 0)   //if randNUm is equal to 0 or 1
            {
                array1[i][j] = randNum;
            }
        }
}

//  Function displays array
void Grid::displayArray()
{

    for (int i = 0; i < length; i++)
    {
        for (int j = 0; j < width; j++)
        {
            cout << array1[i][j] << " ";
        }
        cout << endl;

    }
}


int main() {

    int x1, y1;    //x & y size for 1st grid
    int x2, y2;    //x & y size for 2nd grid
    Grid Object1;

    cout << endl;
    cout << "Lets build two grids and compare which ones " << endl
         << "have matching squares filled with '1' !"<< endl
         << "Please enter the width (Between 1-20) of grid one : ";
    cin >> x1;  //user inputs x of grid1
    cout << "Please enter the length(Between 1-20) of grid one: ";
    cin >>y1;   //user input y of grid1

    cout << "Now enter the width (Between 1-20) of grid TWO: ";
    cin >> x2;  //user inputs x of grid2
    cout << "And, finally, the length (Between 1-20) of grid TWO: ";
    cin >> y2;  //user inputs y of grid2

//    Use setters for setting dimensions of Grids
    Object1.setLength(x1); //Length of Grid one set
    Object1.setWidth(y1);  //Width of Grid one set

//    Equivalent to previous 2 lines
    Grid Object2(x2, y2);   //uses constructor to set 2nd object and array.

//    Fills two arrays
    Object1.fillArray();
    Object2.fillArray();

//    Displays two arrays
    Object1.displayArray();
    cout << "\n\n";

    Object2.displayArray();



//    Compare two arrays

    return 0;
}

[salem c]

https://en.cppreference.com/w/cpp/language/operators
Scroll down to Relational operators
Implement something like
bool operator==(const Grid& lhs, const Grid& rhs){ /* do actual comparison */ }