I don't want to use some sort of goto statement, but I want the user to return to the main menu when the default case is executed. How?? I know this is a simple problem, but there must be lots of newbie who come across something very similar.
static void buycoffee()
{
Double price = 0;
int x = 0;
while (x == 0)
{
Console.WriteLine("Pick a coffee Size");
Console.WriteLine("1: Small");
Console.WriteLine("2: Medium");
Console.WriteLine("3: Large");
int Size = int.Parse(Console.ReadLine());
switch (Size)
{
case 1:
price += 1.20;
break;
case 2:
price += 1.70;
break;
case 3:
price += 2.10;
break;
default:
Console.WriteLine("This option does not exist");
///how to return to the main menu here
break;
}
Console.WriteLine("Would you like to buy more coffee?");
String Response = Console.ReadLine().ToUpper();
if (Response.StartsWith("Y"))
{
Console.Clear();
}
else
{
x += 1;
}
}
Console.WriteLine("The total bill comes to £{0}", price.ToString("0.00"));
}
}
用以下内容替换您的注释行: continue;
As Nico Schertier said, you can accomplish this with something like the following:
int Size = -1;
while (Size == -1) {
Console.WriteLine("Pick a coffee Size");
Console.WriteLine("1: Small");
Console.WriteLine("2: Medium");
Console.WriteLine("3: Large");
Size = int.Parse(Console.ReadLine());
switch (Size)
{
case 1:
price += 1.20;
break;
case 2:
price += 1.70;
break;
case 3:
price += 2.10;
break;
default:
Size = -1;
Console.WriteLine("This option does not exist");
break;
}
}
Beside @Abion47 and @Dogu Arslan's answers you can also create a function for your menu and also one for your switch.
In this example it will create an infinite loop menu
static void Menu()
{
Console.WriteLine("Menu");
Console.WriteLine("1) Take me to My fancy menu");
}
static void SwitchFunc(string input)
{
switch (input)
{
case "1":
Menu();
string inputB = Console.ReadLine();
SwitchFunc(inputB);
break;
}
}
static void Main(string[] args)
{
Menu();
string input = Console.ReadLine();
SwitchFunc(input);
}
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