Interface(Showing Error)

[manjitsarma]

In the following code I am getting the error-' the modifier public is not valid for this item'.Error is showing in 'getAvr'-

public interface student
       {
           public double getAvr(params int[] marks);
           void display(double avr);

       }

I have defined 'getAvr' in a class 'results' which inherits 'student' interface.Code is given below.

 

public class results:student 
       {
           public double getAvr(params int[] marks)
           {
               double avr = 0;
               double tot = 0;
               int n;

               for (int n = 0; n <= marks.length - 1; n++)
                   tot += marks(n);
               avr = tot / marks.Length;
               return avr;
           } 
       
       }

Please tell me how to debug the error .

[Plater]

There is a keyword that you use there, something like "shallow" or something that tells the compiler that this is a function that has to be implemented in an inheriting class.
Unfortunatly I don't remember the exact word.
You might be able to find it with the intellisense though.
Or help on interface in msdn.

Either that or interfaces just don't get to decide what's public and what isn't?

[nateraaaa]

In the following code I am getting the error-' the modifier public is not valid for this item'.Error is showing in 'getAvr'-

public interface student
       {
           public double getAvr(params int[] marks);
           void display(double avr);

       }

I have defined 'getAvr' in a class 'results' which inherits 'student' interface.Code is given below.

 

public class results:student 
       {
           public double getAvr(params int[] marks)
           {
               double avr = 0;
               double tot = 0;
               int n;

               for (int n = 0; n <= marks.length - 1; n++)
                   tot += marks(n);
               avr = tot / marks.Length;
               return avr;
           } 
       
       }

Please tell me how to debug the error .

I don't believe that an interface can accept accessibility types such as (private, public, static, etc.). Only data types such as (void, double, int, etc.). Remove the public keyword from your interface and your error should go away.

Nathan

[manjitsarma]

Thank you very much.I will check it out.

Regards...

Manjit

[manjitsarma]

Ya after removing the public keyword,error is not showing.But I am getting another error in 'marks'.The error is-'marks' is a 'variable,but used like a 'method'.

[Plater]

marks is an array, not a function
you will want to address is like an array.

tot += marks[n];

[manjitsarma]

It is working now.Thank you very much.

Manjit Sarma