How do I output only even numbers in C#

Question

I’m stuck on C# 15.2 practice I’ve done this code below which outputs all numbers going from 1 to the number the console input. It says int numbers that can be divided by 2 are even numbers but I don’t know what todo with this information.

int num = Convert.ToInt32(Console.ReadLine());
int res = 1;
//your code goes here
while(++res<=num)
Console.WriteLine(res);

Answer 1

If you only want to output even numbers, you can start res at 2 and then just increment res by 2 for each iteration up to num.

If you want to check if a number is even (or evenly divisible by 2) you can use the modulo operator and check that the remainder is 0.
num % 2 == 0 // true if even false otherwise.

Answer 2

I finally did it after 2+ hours 😭 lol

https://sololearn.com/coach/665/?ref=app

Answer 3

https://code.sololearn.com/c3wbruv24gZM/?ref=app