Can some explain this while loop to me? It's not exicuting.

Question

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

while(num < 9)
{
Console.WriteLine(num);num+=2

Answer 1

Youre are missing a semicolon and a curly brace at the end:
while(num < 9)
{
Console.WriteLine(num);num+=2;
}

then, with every loop iteration the value of num is increased by 2
num+=2;
is equal to
num = num+2;
when the value of num gets bigger than 8, the loop is left.

So basically, if the user enteres a value of 8 or bigger - the loop will never be entered

Answer 2

Martin Ed it's still not executing. Look below.

int num = Convert.ToInt32(Console.ReadLine());
int res = 1;
//your code goes here
while(num < 9)
{
Console.WriteLine(num);num+=2;
}

Answer 3

Hi, the above code didn't work for me. This was my solution:

int num = Convert.ToInt32(Console.ReadLine());
int res = 1;

res++;

while(res <= num)
{
Console.WriteLine(res);
res+=2;
}

It seems to be that you can't increment N because N (num) is the number that res (what I took to be the range) needs to be smaller or equal to, in order for the sequence up to N to be shown

Not sure why ++res was needed but that's the only way I could get res to = 2

Could have missed something though!