About db- get() methods

Question

There if part of my program:
unsigned int state， state1， fd；
if ((dbret = db_create(&dbt, NULL, 0)) != 0){
printf("db_create: %s\n", db_strerror(dbret));
return ((void*)0);
if((dbret = dbt->set_flags(dbt, DB_RENUMBER)) != 0)
printf("db_create: %s\n", db_strerror(dbret));
return ((void*)0);
if ((dbret = dbt->open(dbt, NULL, SECONDDATABASE, NULL, DB_RECNO, DB_CREATE, 0664)) != 0)
printf("db_create: %s\n", db_strerror(dbret));
return ((void*)0);
for(fd = 1; fd< 102; fd++){
memset(&pkey, 0, sizeof(pkey));
memset(&pdata, 0, sizeof(pdata));
state2 = 0；
state = fd;
pkey.data = &state;
pkey.size = sizeof(unsigned int);
pdata.data = &state;
pdata.size = sizeof(unsigned int);
if((ret = dbt->put(dbt, NULL, &pkey, &pdata, 0)) == 0){
// printf("db: %s: key stored.\n", (char *)key.data);
}else if(ret = DB_KEYEXIST){
dbt->err(dbt, ret, "DB->put");
break;
}else{
dbt->err(dbt, ret, "DB->put");
break;
memset(&pkey, 0, sizeof(pkey));
memset(&pdata, 0, sizeof(pdata));
pkey.data = &state;
pkey.size = sizeof(unsigned int);
pdata.data = &state2;
pdata.ulen = sizeof(unsigned int);
if((ret = dbt->get(dbt, NULL, &pkey, &pdata, 0)) == 0){
printf("state = %d state2 = %d \n ",state, state2);
}else{
dbt->err(dbt, ret, "DB->get");
break;
//CL_STOP
num++;
when i run the program
it printf：
state = 1 state2 = 0
state = 2 state2 = 0
state = 3 state2 = 0
state = 4 state2 = 0
state = 5 state2 = 0
state = 6 state2 = 0
state = 7 state2 = 0
state = 8 state2 = 0
why state2 is not 1,2,3,4........
thank you!

Answer 1

the data.flags must be set to DB_DBT_USERMEM
data.flags = DB_DBT_USERMEM;