Re: help !!!

Hello Sir, thanks for reply. Im just testing what you said and i got this
error:

Enter Username: apellido
Username : apellido
Grade : (null)

-----------------------------
my code:

double i;
char *reply_string;

reply_string = PQgetvalue(res, 0, 1);
i = strtod(reply_string,NULL)/2.0;

Sir, i know that PQgetvalue(res, 0, 1); will return number although it is
declare in the field varchar. Im already test

int i; (also tried unsigned short int)

reply_string = PQgetvalue(res, 0, 1);
i = strtoul(reply_string,NULL, 3)/2.0;

Still i got the same error... Im googling how to convert ascii to integer
and i saw another question which confused me: here it is

Is there a command that can be used to temporarily convert a string value in
a field to integer?

I.E.

SELECT name, employeeid
FROM users
WHERE employeeid = bob

In this case employeeid is an integer, and bob is a number but stored as a
string. how do you temporarily convert bob to an integer for the sake of
the comparison?