character strings, macros, ANSI c, multicharacter chars question

[Ted Schroeder]

I have a macro that needs to turn an argument into a character string.
I notice in IBM/370 C there is a # operator that will do just this.
Is this proper ANSI C?
Here's an example:

    #define PRINTS(a) printf("%s\n", #a);


Also, I would like to create an integer that is full of '+' characters
i.e. on an ASCII machine the four byte integer would be 0x2b2b2b2b.  
Unfortunately the code must run on both ASCII and EBCDIC machines.  
Right now I do the following

    #ifdef ASCII
    #define PLUS 0x2b2b2b2b
    #else /* EBCDIC */
    #define PLUS 0x4e4e4e4e
    #endif /* ASCII */

Is there any portable way to do this?

Thanks in advance for your help.

      Ted Schroeder                   ted at Ultra.com
      Ultra Network Technologies      ...!ames!ultra!ted
      101 Daggett Drive           
      San Jose, CA 95134          
      408-922-0100

Disclaimer:  I don't even believe what I say, why should my company?