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Can there be two void loop in Arduino?
No you cannot. Not only is it no proper C/C++ to have multiple identical functions, i.e. it will not compile (as jfpoilpret’s comment suggests).
How do nested for loops work?
A nested loop is a loop within a loop, an inner loop within the body of an outer one. How this works is that the first pass of the outer loop triggers the inner loop, which executes to completion. Then the second pass of the outer loop triggers the inner loop again. This repeats until the outer loop finishes.
Can you run two for loops in one statement?
Yes you can do a for loop like that, but you have one and just one condition for check. If you can make it check just a one condition for all of your variables for example an And (&&) conditional expression this will work fine, or if you just use the other variables for do something else it will work fine too.
How to break two loops in a function?
But I don’t like them much: 1 Put the loops into a function, and return from the function to break the loops. 2 Raise an exception and catch it outside the double loop. This is using exceptions as a form of goto. 3 Use boolean variables to note that the loop is done, and check the variable in the outer loop to execute a second break.
How is a single loop different from a double loop?
Now our loop is a single loop over pairs, rather than a double loop over indexes. The double loop is still there, but abstraced away inside the unique_pairs generator. This makes our code nicely match our English. And notice we no longer have to write len (s) twice, another sign that the original code wanted refactoring.
How to refactor a function into a double loop?
Put the loops into a function, and return from the function to break the loops. This is unsatisfying because the loops might not be a natural place to refactor into a new function, and maybe you need access to other locals during the loops. Raise an exception and catch it outside the double loop.