/* n_24.t:  # operator in macro definition. */

#define str( a)     # a

/* 24.1:    White spaces should not be inserted (silly specification).  */

/*  "a+b";  */

    str( a+b);

/* 24.2:    White spaces between tokens of operand are converted to one space.

 */

/*  "ab + cd";  */

    str(    ab  /* comment */   +

        cd  );

/* 24.3:    \ is inserted before \ and " in or surrounding literals and no

        other character is inserted to anywhere.    */

/*  "'\"' + \"' \\\"\"";    */

    str( '"' + "' \"");

/* 24.4:    Line splicing by <backslash><newline> is done prior to token

        parsing.   */

/*  "\"abc\"";  */

    str( "ab\

c");

/* 24.5:    Token separator inserted by macro expansion should be removed.

        (Meanwhile, tokens should not be merged.  See 21.2.)    */

#define xstr( a)    str( a)

#define f(a)        a

/*  "x-y";  */

    xstr( x-f(y));