How do I fix error CS8803? I think it might have to do with .NET 6.0 but what do I know-CodePudding

I'm trying to recreate Brackey's Classes tutorial from memory (checked afterwards, of course) and I've run into an issue concerning the order/placement of a fragment. Here's the code:

class Wizard
{
    public static string name;
    public static string spell;
    public static float experience;
    public static int slots;

    public Wizard(string _name, string _spell)
    {
        name = _name;
        spell = _spell;
        slots = 2;
        experience = 0f;
    }

    public void CastSpell()
    {
        if (slots > 0)
        {
            Console.WriteLine($"{name} casted {spell}.");
            slots--;
            experience  = 0.5f;
        }
        else
        {
            Console.WriteLine($"{name} is out of spells!");    
        }

        static void Meditate() //Used static void because public didn't work for some reason?
        {
            Console.WriteLine($"{name} meditates and regains all their spells!");
            slots = 2;
        }
    }
}
 
Wizard wizard1 = new Wizard("Wiz Name", "Spellum lazyum"); 
wizard1.CastSpell();

My problem lies in the placement of these last two lines. When I have them inside the Wizard class, it gives me the error Invalid token '(' in class, record, struct, or interface member declaration. Outside, it throws Top-level statements must precede namespace and type declarations. Am I correct in thinking that the latter might happen because of the 'removal' of the Program class in .NET 6.0? I think I have an okay understand of classes, but clearly I'm missing something. Sorry if this is a simple fix; I didn't get much sleep last night.

Thank you!!

CodePudding user response：

Your problem is the last two lines. These lines are executable code. Executable code must be inside a method.

Executable code is also allowed as top-level statements with specific syntax, hence the error message, but that is not relevant to your use case.

I don't know when you want to execute those two lines of code, but you probably do, so you should move them to the correct location

CodePudding user response：

You have a couple of small problems. You want to support more than one wizard, so you probably want the fields to be instance rather than static. Your Meditate() is defined as a local function inside CastSpell which is not what you want. Your example usage code needs to be inside another class & method. Though you could place that within top level statements.

class Wizard
{
    public string name;
    public string spell;
    public float experience;
    public int slots;

    public Wizard(string _name, string _spell)
    {
        name = _name;
        spell = _spell;
        slots = 2;
        experience = 0f;
    }

    public void CastSpell()
    {
        if (slots > 0)
        {
            Console.WriteLine($"{name} casted {spell}.");
            slots--;
            experience  = 0.5f;
        }
        else
        {
            Console.WriteLine($"{name} is out of spells!");    
        }
    }

    public void Meditate() //Used static void because public didn't work for some reason?
    {
        Console.WriteLine($"{name} meditates and regains all their spells!");
        slots = 2;
    }
}

public static class Program
{
    public static void Test()
    {
        Wizard wizard1 = new Wizard("Wiz Name", "Spellum lazyum"); 
        wizard1.CastSpell();
    }
}

CodePudding user response：

No. The error is not related to NET.6.0.

Code cannot exist directly within a class while being outside of methods (or field/property initializers with respect to expressions). Hence the first error message.

Code can exist as top-level statements, but as the 2nd error message tells you, any top-level statements must precede type declarations. The declaration of a class is a type declaration. Thus your top-level statements do not precede the declaration of your Wizard class, hence error.