Creating a Conditional that prints even

Question

I have a function and if statement that I need to print "even" in the console. The statement is literally, "If num is an even number, print out "even". Don't do anything if num is an odd number."

I thought it would work if I put (num) equal to Math.random. But I got undefined. I also tried setting (num) equal to a specific number and I'm still getting undefined in the console.

How do I get this to print "even"?

function isEven(num) {
    let random = Math.random();
    if (num = random ){
        console.log("even");
    }
}

`=` is assignment, `==` is comparison. But equality is not the same as odd/even. — Dave Newton, Oct 13 '22 at 12:32
Take a look at the [Remainder operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Remainder) `%`. This should help you further — S-Flavius, Oct 13 '22 at 12:34
Even means divisible by 2. Comparing to a random number (which will have an astronomically tiny chance of ever matching anyway) won't do you any good there... — CherryDT, Oct 13 '22 at 12:34
Btw the "undefined" is just the return value of your function. You aren't returning anything. — CherryDT, Oct 13 '22 at 12:35
[How much research effort is expected of Stack Overflow users?](https://meta.stackoverflow.com/a/261593/3082296) — adiga, Oct 13 '22 at 12:42

score 1 · Accepted Answer · edited Oct 13 '22 at 13:37

1

Try something like this:

function isEven(num) {
    if (num % 2 == 0) {
        console.log("even");
    }
}

% gives the remainder of integer division, and so if you do num % 2 and the result is 0 then your number is even! Otherwise, it is an odd!

edited Oct 13 '22 at 13:37

Dave Newton

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answered Oct 13 '22 at 12:36

Amaroke

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score 0 · Answer 2 · edited Oct 13 '22 at 13:37

0

I don't understand why you made a random variable to generate random number you try this instead

function isEven(num) {
  if (num % 2 == 0) {
    console.log("even");
  }
}

edited Oct 13 '22 at 13:37

Dave Newton

158,873
26
254
302

answered Oct 13 '22 at 12:41

Hamdan Salih

60
8

Creating a Conditional that prints even

2 Answers2