libpq/INSERT - Mailing list pgsql-interfaces

Hi, i'm trying to insert data pulled into a postgresql database but i'm having some problems with the inserts.

 

i know that this:
sprintf(insert_string, "INSERT INTO udpdata VALUES (1234);\n");

 

is a valid statment, but how do i alter this so that instead of the 1234 i insert the value of a variable?

 

thanks