What is ++a?

Answer 1

it means increase value of a by 1.

so, if a was 1

++a will return 2.

PS: notice that ++a and a++ are not the same.
a++ will execute the line, then increase a by 1.
++a will increase a by 1, then execute the line.

Answer 2

okay thanks man

Answer 3

GO KILL YOUR SELF

Answer 4

die