/* n_token.t:   special pp-token in C++ */

#define str( a)     xstr( a)

#define xstr( a)    # a

#define paste( a, b)    a ## b

/* token.1: '::' is a token in C++, although illegal token sequence

    in C    */

    /* "::";    */

    str( paste( :, :));

/* token.2: 'and', 'or', 'not', etc. are tokens in C++, although in C

    these are macros defined by <iso646.h>  */

    /* "xor";   */

#if 1 and 2 or not 3

    str( xor);

#endif