Блок-схема С++

Matrix.cpp
#include <iostream>
#include "Matrix.h"
#include <assert.h>
 
using namespace std;
 
Matrix::~Matrix()
{
  for (unsigned int i = 0; i < rows; ++i)
    delete [] matrix[i];
 
  delete [] matrix;
}
 
Matrix Matrix::operator +(const Matrix & obj)
{
  assert(this->rows == obj.rows);
  assert(this->columns == obj.columns);
 
  Matrix result(obj.rows, obj.columns);
 
  for (unsigned int i = 0; i < rows; ++i)
    for (unsigned int j = 0; j < columns; ++j)
      result.matrix[i][j] = obj.matrix[i][j] + this->matrix[i][j];
 
  return result;
}
 
Matrix& Matrix::operator =(const Matrix& obj)
{
  for (unsigned int i = 0; i < rows; ++i)
    delete [] this->matrix[i];
 
  delete [] this->matrix;
 
  this->rows = obj.rows;
  this->columns = obj.columns;
 
  matrix = new int*[rows];
 
  for (unsigned int i = 0; i < rows; ++i) {
    matrix[i] = new int[columns];
 
    for (unsigned int j = 0; j < columns; ++j)
      matrix[i][j] = obj.matrix[i][j];
  }
 
  return *this;
}
 
Matrix::Matrix()
  : matrix(NULL), columns(0), rows(0)
{
}
 
Matrix::Matrix(const Matrix& obj)
  : columns(obj.columns), rows(obj.rows)
{
  matrix = new int*[rows];
 
  for (unsigned int i = 0; i < rows; ++i) {
    matrix[i] = new int[columns];
 
    for (unsigned int j = 0; j < columns; ++j)
      matrix[i][j] = obj.matrix[i][j];
  }
}
 
Matrix::Matrix(const unsigned int rows, const unsigned int columns)
  : rows(rows), columns(columns)
{
  matrix = new int*[rows];
 
  for (unsigned int i = 0; i < rows; ++i)
    matrix[i] = new int[columns];
}
 
Matrix::Matrix(int** values, unsigned int rows, unsigned int columns)
  : rows(rows), columns(columns)
{
  matrix = new int*[rows];
 
  for (unsigned int i = 0; i < rows; ++i) {
    matrix[i] = new int[columns];
 
    for (unsigned int j = 0; j < columns; ++j)
      matrix[i][j] = values[i][j];
  }
}
 
void Matrix::print()
{
  for (unsigned int i = 0; i < rows; ++i) {
    for (unsigned int j = 0; j < columns; ++j)
      std::cout << matrix[i][j] << "\t";
    cout<<endl;
  }
}
 
Matrix.h
#ifndef MATRIX_H
#define MATRIX_H
 
class Matrix
{
public:
  Matrix();
  Matrix(const Matrix& obj);
  Matrix(const unsigned int rows, const unsigned int columns);
  Matrix(int** values, unsigned int rows, unsigned int columns);
  ~Matrix();
 
  Matrix operator +(const Matrix& obj);
  Matrix& operator =(const Matrix& obj);
 
  void print();
 
private:
  unsigned int columns;
  unsigned int rows;
  int** matrix;
};
 
#endif // MATRIX_H
 
Main.cpp 
#include<iostream>
#include<stdlib.h>
#include"matrix.h"
#include<time.h>
 
using namespace std;
 
int main()
{
  const int m = 2;
  const int n = 2;
 
  int values [m][n];
 
  srand(time(NULL));
 
  for(int i = 0; i < m; i++)
    for(int j = 0; j < m; j++)
      values[i][j] = rand() % 50 + 1;
 
  int * pointers[m];
 
  for (int i = 0;i < m; i++)
  {
    pointers[i] = values[i];
  }
  Matrix uno(pointers, m, n);
  cout << "matrix" << endl;
  uno.print();
  cout << endl;
 
  Matrix dos = uno + uno;
  cout << "sum matrix" << endl;
  dos.print();
  system (“pause”);
  return 0;
}