The while Loop

Question

Hello, I cannot make a correct code
the content of the task:
Write a program to take N numbers as input and output all even numbers from 1 to N inclusive, each on a new line.

Sample Input
9

Sample Output
2
4
6
8

Answer 1

you must iterate from 1 (res) to num, and write the variable used to iterate...

I rather would do it with a 'for' loop than with a while loop (even if both are possible), using res as iteration variable:

for (int res=1; res<=num; ++res)

Answer 2

with while loop, you need to declare and assign res outside and before the loop, then you must to check while (res<=num), and inside the loop body you need to print 'if (res%2==0)' to print res, and not forget to increment res at end of loop body ;)

Answer 3

Omg, it was so simpleeee... Thank you a lot!

Answer 4

For me the for seems to be a simpler loop, but this task is in "The while loop".
I cannot understand it, though it is simple

Answer 5

That's my code:
using System;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int num = Convert.ToInt32(Console.ReadLine());
int res = 1;

while(num % 2 == 0)
{
Console.WriteLine(??);

}
}
}

"??" I'm not sure what should be there