Nested multi-line comments are not supported

Question

https://code.sololearn.com/cY2p4cPpiRVf/?ref=app

Answer 1

When compiler sees /* (outer block start) it is taken as block comment start, and when it sees */ (inner block end) it is taken as block comments end. So your */ (outer block end) isn't considered the outer block comment end. The compiler fails to process the */ (outer block end) so whatever comes after it is not possible to be processed.

Answer 2

this seen to be sololearn compiler, let me try another online compiler

Answer 3

✳AsterisK✳ others don't work too:-)

Answer 4

yeah i just noticed that too UraL

Answer 5

the compiler read this line by line and after /* it meets / which will give an error

Answer 6

Nested multiline comments are neither part of any standard nor useful so why should any compiler support them? Especially since supporting this might break older codes.

Answer 7

Aaron Eberhardt For example, I commented out the program code. Then I want to comment out another part of the code, which includes the already commented code

Answer 8

Ipang It would be possible to check the pairing / * - * / to implement. After all, nested blocks {} work

Answer 9

UraL I see your problem. But it's not that hard to simply replace your comment. Also it's not a good practice to comment things out like that.
P.S. you can use if(false) { ... } as comment too if you really need it.

Answer 10

UraL
That's just how the compiler was "taught", to ignore whatever between /* and */. If somehow there's a */ in between, it will take it as comment block end anyways.

I'm still not sure how this way of commenting is comparable to nested {}, or even a use case : )

Answer 11

You can nest // inside /* */

Answer 12

Sonic i know this