Write a C++ program using the concept of OOP for the multiplication of two square Matrices

 //Write a C++ program using the concept of OOP for the multiplication of two square Matrices

 
#include <iostream>
 
// Matrix class
class Matrix
{
private:
    int size;
    int** data;
 
public:
    // Constructor that takes the size of the matrix as a parameter and creates a matrix with the given size
    Matrix(int size) : size(size)
    {
        // Allocate memory for the matrix
        data = new int*[size];
        for (int i = 0; i < size; i++)
            data[i] = new int[size];
    }
 
    // Destructor that frees the memory allocated for the matrix
    ~Matrix()
    {
        for (int i = 0; i < size; i++)
            delete[] data[i];
        delete[] data;
    }
 
    // Function to fill the matrix with values
    void fill(int value)
    {
        for (int i = 0; i < size; i++)
            for (int j = 0; j < size; j++)
                data[i][j] = value;
    }
 
    // Function to print the matrix
    void print()
    {
        for (int i = 0; i < size; i++)
        {
            for (int j = 0; j < size; j++)
                std::cout << data[i][j] << " ";
            std::cout << std::endl;
        }
    }
 
    // Function to multiply the matrix by another matrix
    Matrix operator*(Matrix& other)
    {
        Matrix result(size);
 
        for (int i = 0; i < size; i++)
            for (int j = 0; j < size; j++)
                for (int k = 0; k < size; k++)
                    result.data[i][j] += data[i][k] * other.data[k][j];
 
        return result;
    }
};
 
int main()
{
    // Create two matrices with 3 rows and 3 columns
    Matrix matrix1(3);
    Matrix matrix2(3);
 
    // Fill the matrices with the values 1, 2, 3, 4, 5, 6, 7, 8, 9
    matrix1.fill(1);
    matrix2.fill(2);
 
    // Print the matrices
    std::cout << "Matrix 1:" << std::endl;
    matrix1.print();
    std::cout << "Matrix 2:" << std::endl;
    matrix2.print();
 
    // Multiply the matrices
    Matrix result = matrix1 * matrix2;
 
    // Print the result
    std::cout << "Result:" << std::endl;
    result.print();
 
    return 0;
}
/*
==========Output===========
Matrix 1:
1 1 1
1 1 1
1 1 1
Matrix 2:
2 2 2
2 2 2
2 2 2
Result:
6 6 6
6 6 6
6 6 6
*/