Put and get data from table containing BLOB,CLOB raw by raw in oracle

Question

I have this table and I want to put data using C++ raw by raw in oracle.

CREATE TABLE blob_fun (
  username VARCHAR2(10) NOT NULL,
  iblob    BLOB   ,
  iclob    CLOB   ,
  codeID NUMBER(5)
);

how to put data to this like

insert into blob_fun values('BOB',HOW?,HOW?,12563);

and how to get data from this raw by raw