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Jan 14th, 2007

C# beginner switch statement

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switch(time)
{

case 1: System.Console.WriteLine(" Enter the century. ie 20 or 19.");
C = System.Console.ReadLine();
Convert.ToInt32(C);
goto case 2;

case 2: System.Console.WriteLine("Enter year in YY format. ie 96") ;
Y = System.Console.ReadLine();
Convert.ToInt32(Y);
goto case 3;

case 3: System.Console.WriteLine("Enter month in MM format. ie 03");
M = System.Console.ReadLine();
Convert.ToInt32(M);
goto case 4;
case 4: System.Console.WriteLine("Enter the two digit day of the month. ie 13");
D = System.Console.ReadLine();
Convert.ToInt32(D);
break;
}

I want this switch statemement to fall through. Whats preventing it??

* It wasnt the switch statement at all* oops

Last edited by Mix; Jan 14th, 2007 at 4:37 am.

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Mix

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Junior Poster in Training

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since Sep 2006

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Jan 14th, 2007

Re: C# beginner switch statement

Yeah, C# doesn't support falling through on switch statements

Iron_Cross

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since Jul 2003

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Jan 15th, 2007

Re: C# beginner switch statement

That's one of the fallbacks of a "strong" language such as C# over a "weak" one such as C (this is not a comparing of the strength of the language but the strength of the safeguards build into the language). You might just have to use nested if blocks to accomplish your goal whereas this could easily be done in C.

Regards,

Tyler S. Breton

TylerSBreton

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Jan 17th, 2007

Re: C# beginner switch statement

By the way,

C# does not allow this the way you wish to have it done, executing multiple lines of code in one case and jumping to another (unless you use proper goto statements *bad practice*, which ARE supported in C#). However, you CAN fall through one case to another if and only if the case is blank, which technically isn't "falling through" the way we think of it, but in reality just declaring more than once case for a particular chunk of code.

Example:

c# Syntax (Toggle Plain Text)
 
switch(a)
{
 
    case 1:
    case 2:
    case 3:
        x++;
        break;
    case 4:
        y++;
        break;
 
    default:
        z++;
        break;
 
}
 
switch(a)
{
 
    case 1:
    case 2:
    case 3:
        x++;
        break;
    case 4:
        y++;
        break;
 
    default:
        z++;
        break;
 
}

Hope this clarifies things a bit.

Best Regards,

Tyler S. Breton

Last edited by TylerSBreton; Jan 17th, 2007 at 10:32 pm. Reason: Code-aligning

TylerSBreton

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