how can i convert this part according to postgresql??

[suslucoder]

Im a newbie in PostgreSQL. I have a mysql insert query in c++. You can see it below. I want to convert mysql db to postgresql.
Im using #include <postgresql/libpq-fe.h> for it.

Here is my mysql code:

pstmt = con->prepareStatement("INSERT INTO public.comp_inventory(epp_mac_address,epp_data) VALUES (?,?)");
 
pstmt->setString(1, root.get("MAC","null").asString());
pstmt->setString(2, pars);
 
pstmt->execute();
}

Here is an simple insert statement with pqexec.

ress = PQexec(conn, "INSERT INTO public.device VALUES('1','Audi','52642')");
 
   if (PQresultStatus(ress) != PGRES_COMMAND_OK) {
    std::cout << "insert failed: " << PQresultErrorMessage(ress) << std::endl;
  } else {
    std::cout << "insert counts: " << PQcmdTuples(ress) << std::endl;
  }    
    PQclear(ress);    
    }
 

how can i convert this part according to postgresql??

pstmt->setString(1, root.get("MAC","null").asString());
pstmt->setString(2, pars);