9.43.3.1 Special Characters

A ‘ ! ’ character appearing anywhere on a line indicates the start of a comment that extends to the end of that line.

If a ‘ # ’ appears as the first character of a line then the whole line is treated as a comment, but in this case the line could also be a logical line number directive (see Comments ) or a preprocessor control command (see Preprocessing ).

; ’ can be used instead of a newline to separate statements.