1 1 9.42.2.1 Special Characters 1 ........................... 1 1 '!' is the line comment character. 1 1 You can use ';' instead of a newline to separate statements. 1 1 If a '#' appears as the first character of a line then the whole line 1 is treated as a comment, but in this case the line could also be a 1 logical line number directive (⇒Comments) or a preprocessor 1 control command (⇒Preprocessing). 1 1 Since '$' has no special meaning, you may use it in symbol names. 1