Bai4Lab5-KTLT

#include <iostream>
using namespace std;
int main()
{
    int m[4][3];
    int a(0), b(0), c(0), d(0),i,j;
    for (i = 0; i < 4; i++)
    {
        cout << "Nhap hang thu " << i + 1 << endl;
        for (j = 0; j < 3; j++)
        {
            cout << "Nhap so thu " << j + 1 << ": ";
            cin >> m[i][j];
            cout << endl;
        }
    }
    for (i = 0; i < 3; i++)
    {
        a += m[0][i];
        b += m[1][i];
        c += m[2][i];
        d += m[3][i];
    }
    if (a == b && b == c && c==d)
        cout << "Tong cac phan tu tren cung mot hang bang nhau" << endl;
    else
        cout << "Tong cac phan tu tren cung mot hang khong bang nhau" << endl;
    cout << m[3][2];
    system("pause");