help me please .... deplome project

Hi every one : i'm trying to make a db program using Mysql cbuilder6 . on my table a have fields named patient_Id . its an auto_increment value but i got problem . the problem is when i try to get the value of that fields i got nothing just 0 although i execute the commands

can you tell me how

any one can tell me how can i use the MySQL ++ function in CBuilder 6?? i include it in my project but i got linker error