#include <stdio.h>

#define TEST(a,b) printf("%s, %s => %s\n", #a, #b, __builtin_choose_expr(__builtin_types_compatible_p(a,b),"true","false"))

int main() {
  TEST(char*, char*);
  TEST(char*, const char*);
  TEST(const char*, char*);
  TEST(char[], char*);
  TEST(char*, char[]);
  TEST(char[], const char[]);
  TEST(typeof("hello"), char*);
  TEST(typeof("hello"), char[]);
  TEST(typeof("hello"), const char*);
  TEST(typeof("hello"), const char[]);
  TEST(typeof(&(*"hello")), char*);
  TEST(typeof(&(*"hello")), char[]);
  TEST(typeof(&(*"hello")), const char*);
  TEST(typeof(&(*"hello")), const char[]);
  TEST(typeof(*(&"hello")), char*);
  TEST(typeof(*(&"hello")), char[]);
  TEST(typeof(*(&"hello")), const char*);
  TEST(typeof(*(&"hello")), const char[]);
  TEST(typeof(&(("hello")[0])), char*);
  TEST(typeof(&(("hello")[0])), char[]);
  TEST(typeof(&(("hello")[0])), const char*);
  TEST(typeof(&(("hello")[0])), const char[]);

  char *char_ptr;
  const char *const_char_ptr;
  char char_arr[1];
  const char const_char_arr[1];

  TEST(typeof(&((char_ptr)[0])), char*);
  TEST(typeof(&((char_ptr)[0])), const char*);
  TEST(typeof(&((const_char_ptr)[0])), char*);
  TEST(typeof(&((const_char_ptr)[0])), const char*);
  TEST(typeof(&((char_arr)[0])), char*);
  TEST(typeof(&((char_arr)[0])), const char*);
  TEST(typeof(&((const_char_arr)[0])), char*);
  TEST(typeof(&((const_char_arr)[0])), const char*);
  return 0;
}