MySQL Connector/C++ 调用存储过程

CREATE PROCEDURE test (IN country_code CHAR(3), OUT country_pop INT(11))
BEGIN
    INSERT INTO Country(Code) VALUES (country_code);

    SELECT Population INTO country_pop FROM Country WHERE Name = 'country_name';

    SELECT Code, Name, Population, Continent FROM Country WHERE Continent = "Oceania" AND Population  con(driver->connect(url, user, pass));
con->setSchema(database);
std::auto_ptr stmt(con->createStatement());

stmt->execute("CALL test("ATL", @pop)");  

std::auto_ptr res;
do {
   res.reset(stmt->getResultSet());
   while (res->next()) {
      cout getString(1) getMoreResults());

std::auto_ptr res(stmt->executeQuery("SELECT @pop AS _reply"));
while (res->next())
   cout getString("_reply")