macros with parameters in MSC 5.0

[Paul Fox]

In article <898 at PT.CS.CMU.EDU> edw at IUS1.CS.CMU.EDU (Eddie Wyatt) writes:
>> >  #define ctl(c) ('c'&037)
>> >... is not allowed in MSC5.0
>> 
>> Nor in ANSI C.
>
>  Does this imply that a macro parameter will nolonger be expanded in
>strings too?
>
>#define DEBUG_CALL(xxx)	if ((xxx) != OK) {				 \
>  			    (void) printf("xxx\n");			 \
>  			    (void) printf("%s %d\n\n",__FILE__,__LINE__);\
>                            clearline(); }
>-- 
ANSI gets around this via the '#' and '##' operators -- available within
the preprocessor phase only. As I read it 

# define	CTRL(x)		#x & 037
		CTRL(A);

gives:		"A" & 037

# define	CTRL(x)		'##x##' & 037
		CTRL(A);

gives:		'A' & 037