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Thread: Error ? Jgrasp ...

  1. #1
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    Default Error ? Jgrasp ...

    The question is....
    Write a program that, given an integer input, can display whether the input is a prime number or not. To do this, you must define a method named isPrime that receives an integer as its parameter and will return true if the integer is a prime number. Otherwise, it will return false. Your program will then call this method for the displaying purpose.

    This is my code...
    import java.util.Scanner;
    public class main1 {

    public static void main(String[] args) {

    Scanner abc;
    abc = new Scanner (System.in);
    int input;
    int divide = 2;
    int count=0;


    System.out.println("Please enter an interger to determine if it is prime");
    input = abc.nextInt();


    for (int x=1; x < input; x++) {
    if ((input%divide) == 0)
    count += 1;
    divide = divide + 1;
    }

    if (count == 0)
    System.out.println("It is a prime number");
    else
    System.out.println("It is not a prime number");
    }
    }


    but the question if different with my answer right?
    SO what should i write for this question...

    In JGRASP !! not C or C++ ..

    THANKS !!!!!!


  2. #2
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    Default Re: Error ? Jgrasp ...

    Quote Originally Posted by cukunit0 View Post
    In JGRASP !! not C or C++
    Jgrasp is an IDE and not a programming language. That is like saying I'll have pine timber and not a hammer or chisel.

    but the question if different with my answer right?
    I have no idea what you are saying.
    Improving the world one idiot at a time!

  3. #3
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    Default Re: Error ? Jgrasp ...

    Hello.
    First, do you know what a prime number is?
    Your logic says you don't.

    Syed.

  4. #4
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    Default Re: Error ? Jgrasp ...

    PRIME Number is one which is divide only by it self and 1. now make your logic to find the Prime number . but the programme should be look like this

    int input;
    Scanner myscan = new Scanner(System.in);
    input = myscan.nextInt();
     
    if(isPrime(input))
    System.out.print("This is Prime Number");
    else
    System.out.print("Not Prime");
     
    public boolean isPrime(int a){
    if( // PRIME Number Logic  ) return true;
    else return false
    }

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