public static void Main()
Console.WriteLine("Welcome to face mask shopping");
Console.WriteLine("//////////////////////////////");
Console.WriteLine("How many box you want to purchase");
Console.WriteLine("1: 0-20 box");
Console.WriteLine("2: 21-50 box");
Console.WriteLine("3: 51-100 box");
Console.WriteLine("4: 101-200 box");
Console.WriteLine("5: 201-500 box");
Console.WriteLine("\nso ?");
int choiceInput = Convert.ToInt32(Console.ReadLine());
Console.Write("\n1: Rm40 per box + 10% surcharge on total + Rm10 for shipping price");
else if (choiceInput == 2)
Console.Write("\n2: Rm40 per box + 5% surcharge on total + Rm10 for shipping price");
else if (choiceInput == 3)
Console.Write("\n3: Rm40 per box + Rm10 for shipping price");
else if (choiceInput == 4 )
Console.Write("\n4: Rm40 per box + 5% discount + free shipping ");
else if (choiceInput == 5)
Console.Write("\n5: Rm40 per box + 10% discount + free shipping ");
Console.WriteLine("\nyour answer ?");
Console.WriteLine("\n1 : yes");
Console.WriteLine("2 : No");
double section2 =Convert.ToDouble(Console.ReadLine());
Console.WriteLine("\n1: let's to the next step");
Console.WriteLine("\ni want to know your location");
Console.WriteLine("\n1: East Malaysia");
Console.WriteLine("2: West Malaysia");
double location =Convert.ToDouble(Console.ReadLine());
Console.Write("\n1 : 2% additional surcharge");
Console.Write("\n2 : No additional surcharge");
Console.WriteLine("total purchase");
Console.WriteLine("\n2: thank you");