How do I find a number of special characters such as delimiter in a string?

[somebody]

I am trying to remove special characters in variable NAME. I want a variable to flag that the name has changed so if there is such character in the NAME string, set this to 1. My question is, what would be the most efficient way to achieve this?

My code is:

data Names;
	input name & $32.;
	datalines;
		B/E Aerospace Inc 005
		A H Belo Corp12 
		A. H. BELO CORP  412
		A-H BELO CORP 125
		A - H BELO CORP 124
		;
run;
data names;set names;
	name1=compress(name,'','adk');
run;

What I want:

Name                                                  Flag
BE Aerospace Inc 005                        Yes
A H Belo Corp12                                 No
A H BELO CORP  412                        Yes
AH BELO CORP 125                          Yes
A H BELO CORP 124                         Yes

[Astounding · Accepted solution]

Try removing the middle parameter:

name1 = compress(name,,'adk') ;

Then:

if lengthn(name) ne lengthn(name1) then flag=1;