rename ES.70 to ES.77 and add breaks to the example.

[borissmidt]

ES.70: Prefer a switch-statement to an if-statement when there is a choice:
The example is misses break; between every case this means that it cannot be compared to the if else example. since it will use a fall through

The next 7 Paragraphs talk about loops and goto and then back to switch, moving ES 70 to 77 will make the switch rules grouped together.

I also have a small curiosity what are the rules of a duff device? i.e. mixing a loop and switch case, should this be avoided at all cost, e.g. scream and pull hair out?

[tvaneerd]

A Duff's device is great for when you need something like a Duff's device. But you rarely need something like that.

[AndrewPardoe]

Neil, please prep a PR and send an email review. Please don't move the rules.