Nhận xét về đồ án ma trận của em mong mọi người góp ý

đây là định nghĩa ma trận

#pragma once
#include <iostream>
#include <fstream> 
#include <iostream> 
#include<cstdlib>
#include<stdlib.h>
#include<fstream>
#include<math.h>
#include <ctime> 
#include"iostream"
using namespace std;
#define MAX 10

class matran
{
private:
	int n;
	int  m[MAX][MAX];
public:
	matran();

	// ham tạo ma tran
	
	void nhap();//nhap ma tran bang tay
	void nhap_ngaunhien();//nhap ma tran ngau nhien

	int get_n();//nhan gia tri cua n
	void setMaTran(int);// set so cot va so dong cua ma tran
	void setPhanTu(int, int, int);// set phan tu
	int getPhanTu(int, int);//lay 1 phan tu

	void xuat();//xuat ma tran ra man hinh
	void nhapfile();// nhap tu file//
	void xuatfile();// xuat ra file//

	int tongcheochinh(); //tong cac phan tu tren duong cheo chinh//
	void phantuchan(); //phan tu chan nho nhat tren duong cheo phu//
	int tamgiactren(); //tong cac phan tu thuoc tam giac tren//
	void tamgiacduoi(); //tong cac phan tu thuoc vung tam giac duoi//
	bool ktsnt(int x); //kiem tra so nguyen to//
	void sntln();  // tim so nguyen to lon nhat tren duong cheo chinh//
	bool kiemtratren(); // kiem tra ma tran tam giac tren//
	bool kiemtraduoi(); //kiem tra ma tran tam giac duoi//
	bool kiemtradonvi();	//kiem tra ma tran don vi//
	bool kiemtradx(); // kiem tra doi xung qua duong cheo chinh//
	void sapxep();    // sap xep tang dan tung dong//
	void operator = (matran );
	matran operator + (matran&); // tong hai ma tran//
	matran operator - (matran&);// hieu cua hai ma tran//
	matran operator * (matran&);// tich cua hai ma tran//
	bool kiemtracheochinh();//kiem tra duong cheo chinh//
	~matran();
};

đây là các hàm trong matran
#include "ma_tran.h"


matran::matran()
{
	this->n = 0;
}

void matran::setMaTran(int n)
{
	this->n = n;
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
		m[i][j] = 0;//mac dinh

}

void matran::setPhanTu(int i, int j, int x)
{
	this->m[i][j] = x;
}
int matran::getPhanTu(int i, int j)
{
	return this->m[i][j];
}
// nhap ma tran bang tay
void matran:: nhap()
{
	cout << "nhap vao cap cua ma tran, n= ";
	cin >> n; cout << endl;
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
	{
		cin >> m[i][j];
	}


}
//nhap ma tran ngau nhien
void matran:: nhap_ngaunhien()
{
	cout << "nhap vao cap cua ma tran, n= ";
	cin >> n; cout << endl;
	cout << "ma tran da duoc nhap ngau nhien" << endl;
	srand((unsigned)time(NULL));
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
	{
		m[i][j] = rand() % 10;
	}
}
//tra ve gia tri cua n
int matran::get_n()
{
	return n;
}
// xuat ma tran ra man hih
void matran:: xuat()
{
	cout << "phan tu cua ma tran la" << endl;
	for (int i = 0; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			cout << m[i][j] << "	";
		}
		cout << endl;
		cout << endl;
	}
}
//xuat ma tran ra file
void matran::xuatfile()
{
	matran M;
	ofstream matrandemo("ma tran.txt");
	matrandemo << "phan tu cua ma tran la" << endl;
	for (int i = 0; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			matrandemo << m[i][j] << "	";
		}
		matrandemo << endl;
		matrandemo << endl;
	}
}
//nhap du lieu tu file
void matran::nhapfile()
{
	ifstream matrandemo("matrandemo.txt");
	matrandemo >> n;
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			matrandemo >> m[i][j];
		}
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			cout << m[i][j];
			cout << " ";
		}
		cout << "
";
	}
	matrandemo.close();
	system("pause");
}
//kiem tra so nguyen to//
bool matran::ktsnt(int x)
{
	bool kt = true;
	if (x<2)
	{
		kt = false;
	}
	if (x == 2)
	{
		kt = true;
	}
	else
	{
		for (int i = 2; i<x; i++)
		{
			if (x%i == 0)
			{
				kt = false;
				break;
			}
		}
	}
	return (kt);
}
//tong cac phan tu tren duong cheo chinh//
int matran::tongcheochinh()
{
	int s = 0;
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
	{
		if (i == j)
		{
			s += m[i][j];
		}
	}
	return s;
}
//phan tu chan nho nhat tren duong cheo phu//
void matran::phantuchan()
{
	int i = 0, dem = 0;
	int min = m[i][n - 1 - i];
	for (i = 0; i<n; i++)
	{
		if (m[i][n - 1 - i] % 2 == 0)
		{
			if (m[i][n - 1 - i]<min)
			{
				min = m[i][n - 1 - i];
			}
		}
		else
		{
			dem++;
		}
	}
	if (dem == n)
	{
		cout << "	 khong co phan tu chan" << endl;
	}
	else
	{
		cout << "	 phan tu chan nho nhat la " << min;
	}
}
//tong cac phan tu thuoc tam giac tren//
int matran::tamgiactren()
{
	int s = 0;
	for (int i = 0; i<n; i++)
	{
		for (int j = i + 1; j<n; j++)
		{
			s += m[i][j];
		}
	}
	return (s);
}
//tong cac phan tu nguyen to thuoc vung tam giac duoi//
void matran::tamgiacduoi()
{
	int s = 0;
	for (int i = 1; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			if (ktsnt(m[i][j]) == true && i>j)
			{
				s = s + m[i][j];
			}
		}
	}
	if (s>0)
		cout << "	 tong cac so nguyen to la : " << s;
	else
		cout << "	 khong co so nguyen to! ";
}
//kiem tra ma tran tam giac duoi//
bool matran::kiemtraduoi()
{
	bool kt = true;
	for (int i = 0; i<n; i++)
	{
		for (int j = i + 1; j<n; j++)
		{
			if (m[i][j] != 0)
			{
				kt = false;
				break;
			}
		}
	}
	return (kt);
}
// kiem tra ma tran tam giac tren//
bool matran::kiemtratren()
{
	bool kt;
	for (int i = 1; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			if (i>j)
			{
				if (m[i][j] == 0)
					kt = true;
				else
				{
					kt = false;
					break;
				}
			}
		}
	}
	return (kt);
}
//kiem tra duong cheo chinh//
bool matran::kiemtracheochinh()
{
	bool kt;
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
	{
		if (i == j)
		{
			if (m[i][j] != 1)
			{
				kt = false;
				break;
			}
			else
				kt = true;
		}
	}
	return (kt);
}
// kiem tra ma tran don vi//
bool matran::kiemtradonvi()
{
	bool kt;
	if ((kiemtracheochinh() == true) && (kiemtratren() == true) && (kiemtraduoi() == true))
	{
		kt = true;
	}
	else
	{
		kt = false;
	}
	return (kt);
}

// tim so nguyen to lon nhat tren duong cheo chinh//
void matran::sntln()
{
	int max = 0, dem = 0;
	for (int i = 0; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			if (i == j)
			{
				if (ktsnt(m[i][j]) == true)
				{
					if (max<m[i][j])
					{
						max = m[i][j];
					}
				}
				else
				{
					dem++;
				}
			}
		}
	}
	if (dem == n)
	{
		cout << "	 khong co so nguyen to" << endl;
	}
	else
	{
		cout << "	 so nguyen to lon nhat la   " << max << endl;
	}
}
// kiem tra tinh doi xung cua ma tran//
bool matran::kiemtradx()
{
	bool kt;
	for (int i = 0; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			if (m[i][j] == m[j][i])
			{
				kt = true;
			}
			else
			{
				kt = false;
				break;
			}

		}
	}
	return (kt);
}

// sap xep tang dan tung dong//
void matran::sapxep()
{
	int tam;
	for (int i = 0; i<n; i++)
	{
		for (int j = 0; j<n - 1; j++)
		{
			for (int k = j + 1; k<n; k++)
			{
				if (m[i][j]>m[i][k])
				{
					tam = m[i][j];
					m[i][j] = m[i][k];
					m[i][k] = tam;
				}
			}
		}
	}
}
//phep gán ma tran tran
void matran::operator = (matran  r)
{
	n = r.get_n();
	for (int i = 0; i<n; i++)
	{
		for (int j = 0; j<n; j++)
		{
			m[i][j] = r.getPhanTu(i,j);
		}

	}
}

//tong ma tran
matran matran:: operator + (matran &h)
{
	matran p;
	p.n = h.n;
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
		p.setPhanTu(i, j, m[i][j] + h.m[i][j]);
	return p;
}
//hieu ma tran
matran matran:: operator - (matran &h)
{
	matran p;
	p.n = h.n;
	for (int i = 0; i<n; i++)
	for (int j = 0; j<n; j++)
		p.setPhanTu(i, j, m[i][j] - h.m[i][j]);
	return p;
}
//tich ma tran

matran matran:: operator * (matran &h)
{
	matran p;
	p.n = h.n;
	int temp;
	int i,j,k;
	for (i = 0; i<n; i++)
	{
		for ( j = 0; j<n; j++)
		{
			temp = 0;
			for ( k = 0; k<n; k++)
			{
				temp = temp + (m[i][k] * h.m[k][j]);
			}
			p.setPhanTu(i,j,temp);
		}
	}
	return p;
}

matran::~matran()
{
}

đây là main

#include <iostream>
#include <fstream> 
#include <iostream> 
#include<cstdlib>
#include<stdlib.h>
#include<fstream>
#include<math.h>
#include"ma_tran.h"
using namespace std;
//ham main//
int main(int argc, char** argv)
{
	matran M, h;//khoi tao ma tran
	int  a;
	int chon = -1;
	cout << "Dai Hoc Thu Dau Mot-Lop D13HT01" << endl;
	cout << "Chao thay va cac ban" << endl;
	cout << "Thanh vien cua nhom:" << endl;
	cout << "1. Ho The Manh" << endl;
	cout << "2. Tran Pham Huu Giang" << endl;
	cout << "3. Le Sy Thanh Truong" << endl;
	cout << "4. Huynh Ngoc Thang" << endl;
	cout << "5. Le Nhat Trinh" << endl;
	cout << "================================000000000=============================" << endl;
	cout << endl;

	while (chon != 0)
	{
		cout << endl;
		cout << "=======================000000=======================" << endl;
		cout << "1. nhap ma tran tu ban phim  " << endl;
		cout << "2. nhap ma tran tu file  " << endl;
		cout << "3. xuat ma tran ra man hinh  " << endl;
		cout << "4. xuat ma tran vao file  " << endl;
		cout << "5. tong phan tu tren duong cheo chinh  " << endl;
		cout << "6. phan tu chan nho nhat tren duong cheo phu" << endl;
		cout << "7. tong cac phan tu thuoc tam giac tren  " << endl;
		cout << "8. tong cac phan tu nguyen to thuoc vung tam giac duoi  " << endl;
		cout << "9. tim so nguyen to lon nhat tren duong cheo chinh  " << endl;
		cout << "10. kiem tra ma tran tam giac duoi  " << endl;
		cout << "11. kiem tra ma tran tam giac tren  " << endl;
		cout << "12. kiem tra ma tran don vi  " << endl;
		cout << "13. kiem tra ma tran doi xung qua duong cheo chinh  " << endl;
		cout << "14. sap xep cac phan tu tren mang tang dan tung dong  " << endl;
		cout << "15. tinh tong, hieu, thuong tich cua 2 ma tran  " << endl;
		cout << "0. thoat.";
		cout << endl;
		cout << "	 ban chon : ";
		cin >> chon;
		cout << endl;
			if (chon == 1)
			{	
				cout << "1. nhap bang tay"<<endl;
				cout << "2. nhap ngau nhien"<<endl;
				cin >> a;
				if (a==1)
					M.nhap();
				if (a == 2)
					M.nhap_ngaunhien();
			}
			if (chon == 2)
			{
				M.nhapfile();
			}
			if (chon == 3)
			{
				M.xuat();
			}
			if (chon == 4)
			{
				cout << "ma tran da duoc nhap vao file";
				M.xuatfile();
			}	
		if (chon == 5)
		{
			cout << "	 tong cac phan tu tren duong cheo chinh la:" << M.tongcheochinh() << endl;
		}
		if (chon == 6)
		{
			M.phantuchan();
		}
		if (chon == 7)
		{
			cout << "	 tong cac phan tu tam giac tren la : " << M.tamgiactren();
		}
		if (chon == 8)
		{
			M.tamgiacduoi();
		}
		if (chon == 9)
		{
			M.sntln();
		}
		if (chon == 10)
		{
			if (M.kiemtraduoi() == true)
			{
				cout << "	 day la ma tran tam giac duoi." << endl;
			}
			else
				cout << "	 day khong phai ma tran tam giac duoi." << endl;
		}
		if (chon == 11)
		{
			if (M.kiemtratren() == true)
			{
				cout << "	 day la ma tran tam giac tren." << endl;
			}
			else
				cout << "	 day khong phai la ma tran tam giac tren." << endl;
		}
		if (chon == 12)
		{
			if (M.kiemtradonvi() == true)
				cout << "	 day la ma tran don vi." << endl;
			else
				cout << "	 day khong phai la ma tran don vi." << endl;
		}
		if (chon == 13)
		{
			if (M.kiemtradx() == true)
				cout << "	 day la ma tran doi xung!" << endl;
			else
				cout << "	 day khong phai la ma tran doi xung!" << endl;
		}

		if (chon == 14)
		{
			cout << "ma tran da duoc sap xep" << endl;
			M.sapxep();
			M.xuat();
		}
		if (chon == 15)
		{
			cout << "	 ban hay nhap matran thu 2:" << endl;
			do
			{
				cout << "	 cap ma tran thu 2 bang ma tran thu nhat " << endl;
				cout << "1. nhap bang tay" << endl;
				cout << "2. nhap ngau nhien" << endl;
				cin >> a;
				if (a == 1)
					h.nhap();
				if (a == 2)
					h.nhap_ngaunhien();
			}
			while (h.get_n() != M.get_n());
			cout << "ma tran thu 2 la:" << endl;
			h.xuat();
			cout << "	 tong 2 ma tran" << endl;
			M.tongmatran(h);
			cout << "	 hieu 2 ma tran" << endl;
			M.hieumatran(h);
			cout << "	 tich 2 ma tran" << endl;
			M.tichmatran(h);
		}

	}
	return 0;

}