#include <iostream>
#define foo 1<<16

#ifdef DEBUG
TYPE1 foo(void)
#else
int foo(void)
#endif
{ }

#define x(v) ((v))
# define x(v) ((v))
#  define x(v) ((v))

#if MACRO_WITH_STRING_ARG("hello \"world\"")
#elif MULTI_LINE /* comment */ < \
    EXPRESSION
int bar;
#endif  // comment
