Using while loop i want to print 10 even numbers

Question

I want to print 10 even numbers using while loop but I am unable to do that.

Here is my code,

public class WhileEven {

    public static void main(String[] args) {
        int i=0;
        System.out.println("Even numbers");
        while(i<=10)
        {
            int num=0;
            System.out.println(num);
            i+=1;
            num+=2;
        }
    }
}

can someone help as where i am going wrong?

Answer 1

Hello @Nitesh, you are pretty much there. The only mistake you are doing is assigning the num inside the loop.

public class WhileEven {

    public static void main(String[] args) {
        int i=0;
        int num=0;
        System.out.println("Even numbers");
        while(i<=10)
        {
            System.out.println(num);
            i+=1;
            num+=2;
        }
    }
}

Now what was happening is that every time you were inside the loop the num gets assigned to 0. and you get the miscellaneous output. 

Comments

how if its 

Write a program using While loop that adds all the even numbers less than 100 from  a given sequence of positive integeres. The sequence ends with -999.

Answer 2

public class Loops {
    public static void main(String [] args){
        int x = 1;
        System.out.println("Even numbers");
        while(x<=5){
            System.out.println(x * 2);
           x++;
        }
    }
}

Comments

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Answer 3

C program to print EVEN numbers from 1 to N using while loop

1. There are two variables declared in the program 1) number as a loop counter and 2) n to store the limit.
2. Reading value of n by the user.
3. Initialising loop counter (number) by 1 as initial value number =1.

Given a list of numbers, write a Python program to print all even numbers in given list. Using for loop : Iterate each element in the list using for loop and check if num % 2 == 0. If the condition satisfies, then only print the number. # we can also print even no's using lambda exp.

Answer 4

To print the numbers from 1 to 10,

1. We will declare a variable for loop counter (number).
2. We will check the condition whether loop counter is less than or equal to 10, if condition is true numbers will be printed.
3. If condition is false – loop will be terminated.