Interface and Methods

Question

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Hi I implemented an interface

C#

interface IMathOperationDemo
{
    string getMinimum(decimal Alpha);
    string getMaximum (decimal Beta);
    string getMesorja (decimal Alpha,decimal Beta);
    string getMesatarja (decimal Alpha,decimal Beta);
    string getModa (decimal Alpha,decimal Beta);
    string getVarianca(decimal Alpha,decimal Beta);

   }

and wrote a class

C#

class Normale : IMathOperationDemo
 {
     decimal Alpha;
     decimal Beta;
     decimal mesatarja;
     decimal moda;
     decimal mesorja;
     decimal varianca;
     public string getMinimum();
     public string getMaximum();
     public string GetMesatarja(decimal Alpha,decimal Beta)
     {
         mesatarja = (Alpha + Beta) / 2;
         return mesatarja.ToString;
                 }
     public string GetMesorja(decimal Alpha, decimal Beta)
     {
         mesorja = (Alpha + Beta) / 2;
         return mesorjaToString;
     }
     public string GetModa(decimal Alpha, decimal Beta)
     {
         moda = (Alpha + Beta) / 2;
         return moda.ToString;
     }
     public decimal GetVarianca(decimal Alpha,decimal Beta)
     {
         varianca = ((Beta-Alpha+1)*(Beta-Alpha+1)-1) / 12;
         return varianca.ToString;
     }

and want to publish this values to some textboxes in the mainform.
Anyway getting error message
must declare a body because it is not marked abstract, extern, or partial

Can help pls?

Regards

Posted 8-Jun-11 6:07am

KORCARI

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Sergey Alexandrovich Kryukov · Answer 1 · 2011-06-08T10:08:00

Solution 3

Please look at my answer to your previous question: Cannot convert to string[^].

Whole thing is useless!

—SA

Posted 8-Jun-11 10:08am

Sergey Alexandrovich Kryukov

Uday P.Singh · Answer 2 · 2011-06-08T06:43:00

When we implement interface then we have to implement all the methods in it. Hence while implementing IMathOperationDemo interface you have to implement all the methods, but you are missing the implementation of

C#

string getMinimum(decimal Alpha);
    string getMaximum (decimal Beta);

in your class Normale.

got it..

You can refer the following link for more help:

http://www.csharp-station.com/Tutorials/Lesson13.aspx[^]

Kubajzz · Answer 3 · 2011-06-08T06:11:00

Solution 1

I think the error message is pretty self-explaining. You have to implement the getMinimum() and getMaximum() functions.

Posted 8-Jun-11 6:11am

Kubajzz

Comments

Sergey Alexandrovich Kryukov 8-Jun-11 16:09pm

Correct, my 5, but why nobody looks on what's implemented? It's completely useless.
Please look at my answer where I explain it.
--SA