code will not download

If a code is written on the latest ide version and put on a cd disc, will it download on an older ide version? This is the problem I am having.

Do you want to pad out your question?

I'm sorry I do not understand.

No, me neither.
More detail is required == pad out.

I downloaded a code onto my arduino uno but it do not work properly. A friend of mine said his dad would have a look for me. He obviously downloaded the modified code and said it worked. But when I tried it, it did not work. He also put the code on to a cd which I downloaded but it came up with loads of errors. So if he had written the code on the latest version could that be the problem?

Which IDE version are you using?

Why are you using an old IDE version?

When you encounter an error you’ll see a button on the right side of the orange bar “Copy error messages”. Click that button. Paste the error in a message here USING CODE TAGS (</> button on the toolbar).