有没有可能在C++中在线存储一些东西？

#include <iostream>
#include <sqlite3.h>

static int callback(void *data, int argc, char **argv, char **azColName){
   for(int i=0; i<argc; i++){
      printf("%s = %s\n", azColName[i], argv[i] ? argv[i] : "NULL");
   }
   printf("\n");
   return 0;
}

int main(int argc, char* argv[]){
   sqlite3 *db;
   char *zErrMsg = 0;
   int rc;

   rc = sqlite3_open("test.db", &db);

   if( rc ){
      fprintf(stderr, "Can't open database: %s\n", sqlite3_errmsg(db));
      return 0;
   }else{
      fprintf(stderr, "Opened database successfully\n");
   }

   const char *sql = "CREATE TABLE IF NOT EXISTS COMPANY("
                     "ID INT PRIMARY KEY     NOT NULL,"
                     "NAME           TEXT    NOT NULL,"
                     "AGE            INT     NOT NULL,"
                     "ADDRESS        CHAR(50),"
                     "SALARY         REAL );";

   rc = sqlite3_exec(db, sql, callback, 0, &zErrMsg);

   if( rc != SQLITE_OK ){
      fprintf(stderr, "SQL error: %s\n", zErrMsg);
      sqlite3_free(zErrMsg);
   }else{
      fprintf(stdout, "Table created successfully\n");
   }

   sqlite3_close(db);
   return 0;
}