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Thread: Guyyzz,the output is not coming-- PLS HELP

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    Thumbs down Guyyzz,the output is not coming-- PLS HELP

    the program is for generating prime numbers. The input would be how many prime number a user wants from the code.

    -----------------------------------------------------------------------------------------------------------------

    import java.util.*;
    public class primeNUMBERS {

    /**
    * @param args
    */
    public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner input=new Scanner(System.in);
    System.out.println("Enetr the nos of prime numbers");
    int number=input.nextInt();
    System.out.println("The prime numbers are:");
    primenumbers(number);

    }

    public static void primenumbers(int nos){
    int firstnumber=2;
    int count=0;
    while(count<nos){
    for(int divisor=2;divisor<firstnumber/2;divisor++){
    if(firstnumber%divisor!=0)
    System.out.println("\t"+firstnumber);
    firstnumber++;
    }
    count++;
    }
    }
    }


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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    Check your for loop's conditions. Analyse when is it true and when is it false.

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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    It is way too confusing. Make a separate method to check if a given number is prime and in your method return all prime numbers nos and lower.

    public boolean isPrime(int x){
      for(int z = 2; z < x/2; z++){
        if(x%z == 0){
          return true;
        }
      }
    return false;
    }
     
    public void primeNumbers(int x){
      for(int z = 0; z <= x; z++){
        if(isPrime(z){
          System.out.println(z);
        }
      }
    }

  4. The Following User Says Thank You to beansnbacon For This Useful Post:

    ewibowo (June 1st, 2013)

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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    No. Check _manually_ whether you've provided _correct_ "while" condition at for-loop.

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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    why we cant write "return false" in for loop itself after "else" statement????

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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    By the way, that loop is incorrect. It checks whether a number is not prime. If we write "return" in a loop, will that loop be still correct in all cases?

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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    I've just corrected some mistakes.

    ...
    Last edited by copeg; June 1st, 2013 at 08:41 AM. Reason: Removed spoonfed code

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    Default Re: Guyyzz,the output is not coming-- PLS HELP


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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    Then it should give the output of that nos. which are not prime numbers. But the output is not coming only, I think the method is not running. Wat to do, pls help!!

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    Default Re: Guyyzz,the output is not coming-- PLS HELP

    Quote Originally Posted by Ashish S View Post
    Then it should give the output of that nos. which are not prime numbers. But the output is not coming only, I think the method is not running. Wat to do, pls help!!
    What does this even mean?

    If you still have a question, post the current version of the code with the question.
    Please use complete sentences and full words in your posts.

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