lst-0006-book.cpp
// https://godbolt.org/z/54dzsb31z
#ifndef DATABASE_HPP
#define DATABASE_HPP
typedef void* db_handle_t;
db_handle_t db_open(const char* filename);
void db_close(db_handle_t db);
int db_execute(db_handle_t db, const char* query);
#endif