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How to make a variable an even number?

Asked by Ali Mukhtar 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

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2 Answers

Answer by madhan ravi
on 11 Sep 2019
Edited by madhan ravi
on 11 Sep 2019
 Accepted Answer

Is your question "How to check if a variable consists of even numbers?"
Google "even number mod matlab"

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Ali Mukhtar comments:
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?
I don't have enough experience with Simulink.

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Answer by John D'Errico
on 12 Sep 2019
Edited by John D'Errico
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.

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+1 , smooth and informative explanation as always :)

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