Making Berkeley DB file under RedHat 8.0 using C.

Ok... thank you.
and can I ask another question?
dbtest.c is so source that one data  put into key. so I wonder that is possible to store severl data under one key. for example:
(key) : (data)
fruit = apple,orange,banada
vegetalbe = carot,onion,
...
....
and above source is just for storing data.Therefore if I want to make a program in order to just read berkeley db data, how can I make it ? I made following these sources but it doesn't work. That is,i want to make two program Data is stored by input.c and data is read by reading.c

== input.c ===
#include <stdio.h>
#include <sys/types.h>
#include <stdio.h>
#include <db.h>
#define DATABASE "access.db"
#define SSIZE 256
typedef struct _content{
    char RE[SSIZE];
    char REURL[SSIZE];
    char ACCEL[SSIZE];
} CONTENT;
CONTENT content;
static char* _cpBase64Encoding =
 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
void Base64Encode( char* cpInput, char* cpOutput )
{
 int nIdx[ 4 ];  
 while ( '\0' != *cpInput )
 {
   nIdx[0] = ((*cpInput) & 0xFC)>>2;
   nIdx[1] = ((*cpInput) & 0x03)<<4;
   cpInput++;
   if ( '\0' != *cpInput )
   {
     nIdx[1] |= ((*cpInput) & 0xF0)>>4;
     nIdx[2]  = ((*cpInput) & 0x0F)<<2;
     cpInput++;
     if ( '\0' != (*cpInput) )
     {
       nIdx[2] |= ((*cpInput) & 0xC0) >> 6;
       nIdx[3]  = (*cpInput) & 0x3F;
       cpInput++;
     }
     else
       nIdx[3] = 64;
   }
   else
   {
     nIdx[2] = 64;
     nIdx[3] = 64;
   }

   *(cpOutput+0) = *(_cpBase64Encoding + nIdx[0]);
   *(cpOutput+1) = *(_cpBase64Encoding + nIdx[1]);
   *(cpOutput+2) = *(_cpBase64Encoding + nIdx[2]);
   *(cpOutput+3) = *(_cpBase64Encoding + nIdx[3]);
   cpOutput += 4;
 }
 
 *cpOutput = '\0';

 return;
}
int main (){
      FILE *fp;
      DB *dbp;
      DBT key,data;
      int ret,t_ret;
      int size=600;
      char buf[size];
      char sNonCoded[256];
      char ssNonCoded[256];
      char sssNonCoded[256];
      char ssssNonCoded[256];
      char sEncoded[256];
      char ssEncoded[256];
      char sssEncoded[256];
      char ssssEncoded[256];
      char regex[6];
      char redirect[512];
      char redirect_url[512];
      char accel[512];
      //Read data
      if((fp=fopen("2.txt","rt")) ==  NULL){
            printf("Error: Cannot open data file\n");
            return(1);
      }
        // Create Berkeley DB
      if ((ret = db_create(&dbp, NULL, 0)) != 0) {
            fprintf(stderr, "db_create: %s\n", db_strerror(ret));
            exit (1);
      }
      if ((ret = dbp->open(
          dbp, DATABASE, NULL, DB_BTREE, DB_CREATE, 0664)) != 0) {
            dbp->err(dbp, ret, "%s", DATABASE);
            goto err;
      }

  while(fgets(buf,size-1,fp)){
      sscanf(buf,"%6s %512s %512s %512s",regex,redirect,redirect_url,accel);
      strcpy(sNonCoded,regex);
      strcpy(ssNonCoded,redirect);
      strcpy(sssNonCoded,redirect_url);
      strcpy(ssssNonCoded,accel);
      Base64Encode( sNonCoded, sEncoded );
      Base64Encode( ssNonCoded, ssEncoded );
      Base64Encode( sssNonCoded, sssEncoded );
      Base64Encode( ssssNonCoded, ssssEncoded);
      memset(&key,0,sizeof(key));
      memset(&data,0,sizeof(data));
      key.data = sEncoded;
      key.size = sizeof(sEncoded);
      strncpy(content.RE,ssEncoded,SSIZE);
      strncpy(content.REURL,sssEncoded,SSIZE);
      strncpy(content.ACCEL,ssssEncoded,SSIZE);
      data.data = (char *)&content;
      data.size = sizeof(CONTENT);
      if ((ret = dbp->put(dbp,NULL,&key,&data,0))==0){
            printf("db: %s: field 1 stored.\n",(char *)key.data);
            printf("db: %s: field 2 stored.\n",content.RE);
            printf("db: %s: field 3  stored.\n",content.REURL);
            printf("db: %s: field 4  stored.\n",content.ACCEL);
      }else{
            printf("Error");
            dbp->err(dbp,ret,"DB->put");
            goto err;
      }


  }
  err: if ((t_ret = dbp->close(dbp, 0)) != 0 && ret == 0)
              ret = t_ret;
              exit(ret);
}




== reading.c =====
#include <stdio.h>
#include <sys/types.h>
#include <stdio.h>
#include <db.h>
#define DATABASE "access.db"
#define SSIZE 256
typedef struct _content{
    char RE[SSIZE];
    char REURL[SSIZE];
    char ACCEL[SSIZE];
} CONTENT;
CONTENT content;

int main (){
      FILE *fp;
      DB *dbp;
      DBT key,data;
      int ret,t_ret,i=0;
      char sNonCoded[256];
      char rkey[1000 + 1], *retaddr;
    // Create Berkeley DB
      if ((ret = db_create(&dbp, NULL, 0)) != 0) {
            fprintf(stderr, "db_create: %s\n", db_strerror(ret));
            exit (1);
      }
      if ((ret = dbp->open(
          dbp, DATABASE, NULL, DB_BTREE, DB_CREATE, 0664)) != 0) {
            dbp->err(dbp, ret, "%s", DATABASE);
            goto err;
      }

  while((ret = dbp->get(dbp, NULL, &key, &data, 0)) != 0){
      printf("%d\n",i);
      memset(&key,0,sizeof(key));
      memset(&data,0,sizeof(data));
      key.data = rkey;
      key.size = sizeof(rkey);
      data.data = (char *)&content;
      data.size = sizeof(CONTENT);
      printf( "Decoded(field 1): %s\n", (char *)key.data );
      printf( "Decoded(field 2): %s\n",((CONTENT *)(data.data))->RE);
      printf( "Decoded(field 2): %s\n", ((CONTENT *)(data.data))->REURL);            
      printf( "Decoded(field 2): %s\n\n", ((CONTENT *)(data.data))->ACCEL);
      i++;
      if ( i == 20) {
            exit(1);
      }
  }
  err: if ((t_ret = dbp->close(dbp, 0)) != 0 && ret == 0)
              ret = t_ret;
  exit(ret);
}


I apprecate of your help..!!