## How to make a variable an even number?

### Ali Mukhtar (view profile)

on 11 Sep 2019
Latest activity Commented on by madhan ravi

on 12 Sep 2019

if i have variable an even number is there any direct command can be used please mention with an example

### Tags

on 11 Sep 2019

on 11 Sep 2019

Is your question "How to check if a variable consists of even numbers?"

on 12 Sep 2019
no sir thats not the case , this my own work not any assignment. and thanks for your help i have solved the problem... can you please tell how can we display simulink fuction values in matlab command window?

on 12 Sep 2019
I don't have enough experience with Simulink.
Ali Mukhtar

on 12 Sep 2019
ok np

### John D'Errico (view profile)

on 12 Sep 2019
Edited by John D'Errico

### John D'Errico (view profile)

on 12 Sep 2019

If you just want to check if a variable X is an even number, then just check the value of mod(x,2). If the result is zero, then X was even.
X = randi(10,1,5)
X =
4 10 8 9 7
mod(X,2)
ans =
0 0 0 1 1
So the first three elements of X were even numbers, because the modulus base 2 were zero for those elements. Here, zero tell you even. 1 tells you odd. If you want a result that is true for even numbers, then do something like this:
mod(X,2) == 0
ans =
1×5 logical array
1 1 1 0 0
As you can see, the result is now true for the even numbers.
If you want to see if all, or any of them were even, then do one of these as appropriate:
all(mod(X,2) == 0)
ans =
logical
0
any(mod(X,2) == 0)
ans =
logical
1
So they were not all even, but SOME of them were even.