Write a C# program to read two numbers from the command line and print the highest fibonacci prime number between that range of the given input.

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the code for the question mentioned

What I have tried:

using System;  
  public class Fibonacci  
   {  
     public static void Main(string[] args)  
      {  
         int n1=0,n2=1,n3,i,number;    
         Console.Write("Enter the number of elements: ");    
         number = int.Parse(Console.ReadLine());  
         Console.Write(n1+" "+n2+" "); //printing 0 and 1    
         for(i=2;i<number;++i) //loop starts from 2 because 0 and 1 are already printed    
         {    
          n3=n1+n2;    
          Console.Write(n3+" ");    
          n1=n2;    
          n2=n3;    
         }    
      } 
  }
	  public class PrimeNumber  
   {  
     public static void Main(string[] args)  
      {  
		 Program p = new program();
		 p.fibonacci();
		
          int n, i, m=0, flag=0;    
          Console.Write("Enter the Number to check Prime: ");    
          n = int.Parse(Console.ReadLine());  
          m=n/2;    
          for(i = 2; i <= m; i++)    
          {    
           if(n % i == 0)    
            {    
             Console.Write("Number is not Prime.");    
             flag=1;    
             break;    
            }    
          }    
          if (flag==0)    
           Console.Write("Number is Prime.");       
     } 
	  }
	  public class MaximumNumber  
   {  
      public static void Main() 
{
    int[] arr1= new int[100];
    int i, mx,  n;
	
	
       Console.Write("\n\nFind maximum and minimum element in an array :\n");
       Console.Write("--------------------------------------------------\n");	

       Console.Write("Input the number of elements to be stored in the array :");
	   n= Convert.ToInt32(Console.ReadLine());  
   
       Console.Write("Input {0} elements in the array :\n",n);
       for(i=0;i<n;i++)
            {
	      Console.Write("element - {0} : ",i);
		  arr1[i] = Convert.ToInt32(Console.ReadLine());  
	    }


    mx = arr1[0];
   

    for(i=1; i<n; i++)
    {
        if(arr1[i]>mx)
        {
            mx = arr1[i];
        }


    }
    Console.Write("Maximum element is : {0}\n", mx);
    
  }	
}

Posted 1-Mar-20 18:26pm

Member 14760091

Updated 2-Mar-20 0:08am

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Patrice T 2-Mar-20 0:48am

And you have a question or a problem ?

George Swan 2-Mar-20 4:35am

Try searching for 'How to check if a given number is Fibonacci number'

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2020-03-01T19:32:00

Compiling does not mean your code is right! :laugh:
Think of the development process as writing an email: compiling successfully means that you wrote the email in the right language - English, rather than German for example - not that the email contained the message you wanted to send.

So now you enter the second stage of development (in reality it's the fourth or fifth, but you'll come to the earlier stages later): Testing and Debugging.

Start by looking at what it does do, and how that differs from what you wanted. This is important, because it give you information as to why it's doing it. For example, if a program is intended to let the user enter a number and it doubles it and prints the answer, then if the input / output was like this:

Input   Expected output    Actual output
  1            2                 1
  2            4                 4
  3            6                 9
  4            8                16

Then it's fairly obvious that the problem is with the bit which doubles it - it's not adding itself to itself, or multiplying it by 2, it's multiplying it by itself and returning the square of the input.
So with that, you can look at the code and it's obvious that it's somewhere here:

C#

private int Double(int value)
   {
   return value * value;
   }

Once you have an idea what might be going wrong, start using the debugger to find out why. Put a breakpoint on the first line of the method, and run your app. When it reaches the breakpoint, the debugger will stop, and hand control over to you. You can now run your code line-by-line (called "single stepping") and look at (or even change) variable contents as necessary (heck, you can even change the code and try again if you need to).
Think about what each line in the code should do before you execute it, and compare that to what it actually did when you use the "Step over" button to execute each line in turn. Did it do what you expect? If so, move on to the next line.
If not, why not? How does it differ?
Hopefully, that should help you locate which part of that code has a problem, and what the problem is.
This is a skill, and it's one which is well worth developing as it helps you in the real world as well as in development. And like all skills, it only improves by use!

Patrice T · Answer 2 · 2020-03-02T00:08:00

Quote:
the code for the question mentioned

Your code is only remotely related to the problem as it list Fibonacci numbers, but you need to adapt for use in this problem.

You show no attempt to solve the problem yourself, you have no question, your main effort is pasting the requirement, you just want us to do your HomeWork.
HomeWork problems are simplified versions of the kind of problems you will have to solve in real life, their purpose is learning and practicing.

We do not do your HomeWork.
HomeWork is not set to test your skills at begging other people to do your work, it is set to make you think and to help your teacher to check your understanding of the courses you have taken and also the problems you have at applying them.
Any failure of you will help your teacher spot your weaknesses and set remedial actions.
Any failure of you will help you to learn what works and what don't, it is called 'trial and error' learning.
So, give it a try, reread your lessons and start working. If you are stuck on a specific problem, show your code and explain this exact problem, we might help.

Write a C# program to read two numbers from the command line and print the highest fibonacci prime number between that range of the given input.

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Write a C# program to read two numbers from the command line and print the highest fibonacci prime number between that range of the given input.

2 solutions

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