How to index a variable value and assign it to an array?

I am a beginner in MatLab and I am trying to assign a variable value to an array.

Ex:

d1 = 579

y = array(d1)

I know I can just input the number into the array, but I want to extract the value from the variable just in case d1 changes.

[the cyclist]

It seems that you are not just a beginner, but you have really spent almost no time learning even the most basic operations of MATLAB. I would recommend viewing a tutorial such as the MATLAB Onramp.

Answer 1

[the cyclist]

Do you mean simply

y = d1

If not, can you give a more specific example of the input and output you would expect (not just a pretend syntax that does not work)?