sqlite3 return unknown error in c++

Question

hy all i have problem with my program

here is my code

# include <iostream>
# include <sqlite3.h>
# include <sstream>
using namespace std;
int main()
{
sqlite3 *db;
sqlite3_stmt *res;
int rc;
string nama;
int umur;
rc=sqlite3_open("namaorang.db",&db);
if(rc!=SQLITE_OK)
{
    cout<<sqlite3_errmsg(db);
}
else
{
    cout<<"Nama : ";cin>>nama;
    cout<<"Umur : ";cin>>umur;
    stringstream sql;
    sql<<"INSERT INTO data (nama,umur)VALUES ('"<<nama<<"','"<<umur<<"');";
    rc=sqlite3_prepare(db,sql.str().c_str(),-1,&res,NULL);
    if(rc!=SQLITE_OK)
    {
        cout<<sqlite3_errmsg(db);
        sqlite3_close(db);
    }
    rc=sqlite3_step(res);
    if(rc!=SQLITE_OK)
    {
        cout<<sqlite3_errmsg(db);
    }

}
sqlite3_finalize(res);
sqlite3_close(db);
}

when i run my program and input the query , this program return unknown error,, how to fix this.. meanwhile the error is unknown,, how to known the error.. thanks for read this

Answer 1

if(rc!=SQLITE_OK) { cout<<sqlite3_errmsg(db); sqlite3_close(db); }

Seems like you need return here, but you continue to work with results after error instead.