public static void Main()
Console.WriteLine("nhap so tien cua 3 mon do");
Console.WriteLine("nhap gia tien mon do 1");
item1 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("nhap gia tien cua mon do 2");
item2 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("nhap gia tien cua mon do 3");
item3 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("gia tien cac mon hang khi giam gia");
Console.WriteLine("gia tien cua mon do 1 sau khi giam 10% = ", total =(i1*item1));
Console.WriteLine("gia tien cua mon do 2 sau khi giam 20% = ", total = (i2*item2));
Console.WriteLine("gia tien cua mon do 3 sau khi giam 30% = ", total = (i3*item3));