Thread: Help With Odd/Even number program

Hey guys i'm new to java and im trying to teach myself java to help with my university course. Im trying to create a program that takes in a integer and returns the odd and even values upto that number. Here is the code i have at the moment and i would appreciate if someone could explain to me where im going thanks in advance.

 
import java.util.*;
 
public class OddEvenNum
{
   public static void main(String[] args)
 
        {
        int i;
 
        char choice;
        Scanner sc = new Scanner(System.in);
 
        do
                {
                System.out.println("Welcome to odd and even number checker please enter a number");
                i = sc.nextInt();
 
 
 
                if(i%2 == 0; i++)
                        {
                        System.out.println("Even number is :" + i);
                        }
                        else
                       {
                        System.out.println("Odd number is :" + i);
                        }
 
 
                System.out.println("Would you like to try another number? :");
                choice = sc.next() .charAt(0);
 
 
 
 
 
                }while (choice == 'y' || choice == 'Y');
        }
}

hmm looks like your program satisfies what you need.


so what do you want to know about your program?

Basically it takes in the integer then only returns the first odd or even number i want it to display all the odd and even numbers for example:
Int 10
odd number is 1
even number is 2
odd number is 3
even number is 4
all the way to 10 etc

You need to include a loop

for ( int j = 0; j < i; j++ ){
    //check j for even or odd and act accordingly
}

thats got me one step further but it will now print the number the amount of times of the integer e.g. it prints 5, 5 times

import java.util.*;
 
public class Test
{
   public static void main(String[] args)
 
	{
	int i;
 
	char choice;
	Scanner sc = new Scanner(System.in);
 
	do
		{
        	System.out.println("Welcome to odd and even number checker please enter a number");
        	i = sc.nextInt();
 
		for(int j = 0; j < i; j++)
		{
 
		if(i%2 == 0)
			{
			System.out.println("Even number is :" + i);
			}
			else
			{
			System.out.println("Odd number is :" + i);
			}
 
		}
		System.out.println("Would you like to try another number? :");
		choice = sc.next() .charAt(0);
 
 
 
 
 
		}while (choice == 'y' || choice == 'Y');
	}
}

something like this ?

   public static void main(String[] args) {
 
        int count = 0;
 
        do {
 
            count++;
 
            if (count % 2 == 0) {
 
                System.out.println(count + " is even");
            }
            else {
 
                System.out.println(count + " is odd");
 
            }
        }
        while(count != 10);
 
    }
}

ye only i want it to display all the odd numbers or even numbers depending on the value i enter

this one?

 public static void main(String[] args) throws IOException {
 
        int count = 0;
 
        System.out.print("Enter The Max Value: ");
        int max = Integer.parseInt(br.readLine());
 
        System.out.print("Which Value Do You Want To Display Even Or Odd?");
        String answer = br.readLine();
 
        do {
 
            count++;
 
            if (answer.equalsIgnoreCase("even")) {
 
                if (count % 2 == 0) {
 
                    System.out.println(count);
                }
            }
            else  if (answer.equalsIgnoreCase("odd")) {
 
                if (count % 2 == 1) {
 
                    System.out.println(count);
                }
            }
        }
        while (count != max);
    }
}