Expand do loops with cycle and exit

[Irvise]

This is a minor expansion of the tutorial page on control flow.

I am not entirely happy with the current result, but I cannot figure out why (probably because it is very short when compared to the rest of the file). So any comments on these changes are welcome.

I expect to continue expanding this with do concurrent and tags. However, some initial feedback will be beneficial.

This pull is related to the discussion in fortran-lang/webpage#68.

Regards,

Fernando

[LKedward]

This looks great @Irvise, definitely an improvement!
Thanks 👍

[certik]

Thanks @Irvise, looks great!

[milancurcic]

I agree, great addition, thank you!

#build_preview

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[Irvise]

I suppose this marks the end of the changes.

Please, check do concurrent since I am not well versed with it and I may have committed some mistakes.

More comments are welcome.

[LKedward]

Apologies for the delay @Irvise, I will review this today with specific feedback.

[LKedward]

Thanks again for this @Irvise; I only have a few minor suggestions, but otherwise it all looks good to me! 👍
One thing I have not included in my suggestions is that it may be better to move the do concurrent section to the end since it is a more advanced concept than the loop control statements.

[LKedward]

#build_preview

[github-actions]

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[Irvise]

I have moved do concurrent to the bottom and I have updated some comparison symbols to a more "modern" standard.

I would say LGTM. Thanks @LKedward for the improvements!

[LKedward]

Great stuff! 👍 (Sorry for the conflicts!)
#build_preview

[Irvise]

#build_preview

[github-actions]

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[LKedward]

One last thing @Irvise, some of the indentation is rendering incorrectly for the cycle example, and the tagged nested loop example; the end if is not aligned with the opening if and the loop body has extra indentation. Can you make sure you're not using any tab characters, only spaces?

[Irvise]

#build_preview

[github-actions]

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[LKedward]

I will merge as no other comments. Great addition @Irvise, thanks!

[LKedward]

#delete_preview

[github-actions]

The preview build for this PR has now been deleted.