careless interface problem?

Question

User-1442981517 posted

 Time to time slight alteration of the code is giving me sleepless nights

Now the following does not compile for any reason / help with code please?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace scratch_pad_2
{
    //Demonstrate the ISeries Interface
    class scratch_pad_2
    {
        static void Main(string[] args)
        {
            ByTwos ob = new ByTwos();
          {
              for(int i = 0 ; i<5; i++)
                  Console.WriteLine("Next value is"+ob.GetNext());
            Console.WriteLine("\nResetting");
            ob.Reset();
            for(int i=0; i<5;i++)
                Console.WriteLine("Next value is"+ob.GetNext());
            Console.WriteLine("\nstarting at 100");
            ob.SetStart(100);
            for(int i=0;i<5;i++)
                Console.WriteLine("Next vallue is"+ob.GetNext());
          }
          Console.Read();

        }
    }

    public interface ISeries
    {
        int GetNext();
      int ReSet();
   int SetStart(int x);
    }

    // implement the ISeries
    class ByTwos : ISeries
    {
        int start;
        int val;

        public ByTwos()
        {
            start = 0;
            val = 0;
        }

        public int GetNext()
        {
            val = val + 2;
        }
        public int Reset()
        {

           val = start;
      
         return val;

        }

        public int SetStart(int x)
        {
            start = x;
            val = start;
            return val;
            return start;
        }
   
  
    }

}

ERROR REPORT:-

Error 1 'scratch_pad_2.ByTwos' does not implement interface member 'scratch_pad_2.ISeries.ReSet()' C:\Users\lenovo\documents\visual studio 2010\Projects\scratch pad 2\scratch_pad_2.cs 39 11 scratch pad 2

 

Answer 1

User1320101480 posted

I guess we solved it somedays back. Again the same problem?

Answer 2

User1866467575 posted

I found two problems in your code.

1.  The implementation of GetNext function in ByTwos does not return any integer value, it should as its return type is int

2. C# is case sensitive. The Implementation of Reset function is incorrect: Name should match the name in the interface. Rename the function to ReSet as done in the interface.

These two changes should compile your code.

Answer 3

User1288683547 posted

Again???

in you interface you declare ReSet, but in impl used Reset, change your code like

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace scratch_pad_2
{
    //Demonstrate the ISeries Interface
    class scratch_pad_2
    {
        static void Main(string[] args)
        {
            ByTwos ob = new ByTwos();
            {
                for (int i = 0; i < 5; i++)
                    Console.WriteLine("Next value is" + ob.GetNext());
                Console.WriteLine("\nResetting");
                ob.Reset();
                for (int i = 0; i < 5; i++)
                    Console.WriteLine("Next value is" + ob.GetNext());
                Console.WriteLine("\nstarting at 100");
                ob.SetStart(100);
                for (int i = 0; i < 5; i++)
                    Console.WriteLine("Next vallue is" + ob.GetNext());
            }
            Console.Read();

        }
    }

    public interface ISeries
    {
        int GetNext();
        int Reset();
        int SetStart(int x);
    }

    // implement the ISeries
    class ByTwos : ISeries
    {
        int start;
        int val;

        public ByTwos()
        {
            start = 0;
            val = 0;
        }

        public int GetNext()
        {
            return val + 2;
        }
        public int Reset()
        {

            val = start;

            return val;

        }

        public int SetStart(int x)
        {
            start = x;
            val = start;
            return val;
            return start;
        }


    }

}

Answer 4

User1320101480 posted

Check now:

        static void Main(string[] args)
        {
            ByTwos ob = new ByTwos();
            {
                for (int i = 0; i < 5; i++)
                    Console.WriteLine("Next value is" + ob.GetNext());
                Console.WriteLine("\nResetting");
                ob.ReSet();
                for (int i = 0; i < 5; i++)
                    Console.WriteLine("Next value is" + ob.GetNext());
                Console.WriteLine("\nstarting at 100");
                ob.SetStart(100);
                for (int i = 0; i < 5; i++)
                    Console.WriteLine("Next vallue is" + ob.GetNext());
            }
            Console.Read();

        }
    }

    public interface ISeries
    {
        int GetNext();
        int ReSet();
        int SetStart(int x);
    }

    // implement the ISeries
    class ByTwos : ISeries
    {
        int start;
        int val;

        public ByTwos()
        {
            start = 0;
            val = 0;
        }

        public int GetNext()
        {
            val = val + 2;
            return val;
        }

        public int SetStart(int x)
        {
            start = x;
            val = start;
            return val;
            
        }


        #region ISeries Members


        public int ReSet()
        {

            val = start;

            return val;
        }

        #endregion

Answer 5

User-1442981517 posted

Actually it did not solve the problem it was not compiling   --- also the code is changed

Answer 6

User1320101480 posted

Yea check now, it's working, replace your code inside the class with the one i have posted above.

Answer 7

User-1442981517 posted

 thank you   Saurabh Nijhawan
thank you   Mãsthän Oli
thank you   Gopakumar