Why it gives an error massage?

Question

https://code.sololearn.com/cW3Xso4kfzmc/?ref=app

Answer 1

Numbers that start with 0 are considered to be in octal system.
So the problem here is the last digit '8', since in the octal system only digits from 0 to 7 are allowed.

023 for example would work, yielding 2*8+3 = 19 in the usual decimal system

Answer 2

Because an int shouldn't start with 0, change it to a=28

Answer 3

you can also read this article:
https://stackoverflow.com/questions/7218760/why-is-08-not-a-valid-integer-literal-in-java

Answer 4

Please mention the language (Java) in Relevant Tags 👍

Answer 5

Please mention the language (Java) in Relevant Tags 👍