Pro*C Hello World Example

/* Hello World in Pro*C, the Oracle's embedded SQL environment */

#include 

EXEC SQL INCLUDE SQLCA;

int main() {
   char hello[15];
   char *user = "the_user";
   char *password = "the_password";
   char *sid = "the_sid";

   EXEC SQL CONNECT :user IDENTIFIED BY :password USING :sid;

   EXEC SQL
      SELECT 'Hello World' INTO :hello
      FROM DUAL;

   printf("%s\n", hello);

   EXEC SQL COMMIT RELEASE;

   return 0;
}