static void Main(string[] args)
{
var dathuc_1 = new DaThuc(3);
dathuc_1.NhapDaThuc();
dathuc_1.XuatDaThuc();
var dathuc_2 = new DaThuc(3);
dathuc_2.NhapDaThuc();
dathuc_2.XuatDaThuc();
Console.WriteLine();
Console.WriteLine("Da thuc 1 + Da thuc 2 = ");
var dathuc_tong = dathuc_1 + dathuc_2;
dathuc_tong.XuatDaThuc();
var tong_2 = dathuc_1.Cong(dathuc_2);
tong_2.XuatDaThuc();
Console.WriteLine();
Console.WriteLine("Da thuc 1 - Da thuc 2 = ");
var dathuc_hieu = dathuc_1 - dathuc_2;
dathuc_hieu.XuatDaThuc();
var hieu_2 = dathuc_1.Tru(dathuc_2);
hieu_2.XuatDaThuc();
Console.ReadLine();
}
public DaThuc Tru(DaThuc dt2)
{
int bacCaoHon = this.n > dt2.n ? this.n : dt2.n;
int bacThapHon = this.n < dt2.n ? this.n : dt2.n;
DaThuc dt_tong = new DaThuc(bacCaoHon);
for (int i = 0; i <= bacThapHon; i++)
{
dt_tong.array[i] = this.array[i] - dt2.array[i];
}
if (this.n == bacThapHon)
{
for (int i = bacThapHon + 1; i <= dt2.n; i++)
{
dt_tong.array[i] = dt2.array[i];
}
}
else
{
for (int i = bacThapHon + 1; i <= this.n; i++)
{
dt_tong.array[i] = this.array[i];
}
}
return(dt_tong);
}
public static DaThuc operator -(DaThuc dt1, DaThuc dt2)
{
int bacCaoHon = dt1.n > dt2.n ? dt1.n : dt2.n;
int bacThapHon = dt1.n < dt2.n ? dt1.n : dt2.n;
DaThuc dt_tong = new DaThuc(bacCaoHon);
for (int i = 0; i <= bacThapHon; i++)
{
dt_tong.array[i] = dt1.array[i] - dt2.array[i];
}
if (dt1.n == bacThapHon)
{
for (int i = bacThapHon + 1; i <= dt2.n; i++)
{
dt_tong.array[i] = dt2.array[i];
}
}
else
{
for (int i = bacThapHon + 1; i <= dt1.n; i++)
{
dt_tong.array[i] = dt1.array[i];
}
}
return(dt_tong);
}