LevelDB-course-Lab/test/test_a.cpp

#include "leveldb/db.h"
#include <iostream>

using namespace std;
using namespace leveldb;

int main() {
  DB* db = nullptr;
  Options op;
  op.create_if_missing = true;
  Status status = DB::Open(op, "testdb", &db);
  assert(status.ok());
  db->Put(WriteOptions(), "001", "leveldb");
  string s;
  db->Get(ReadOptions(), "001", &s);
  cout<<s<<endl;

  db->Put(WriteOptions(), "002", "world");
  string s1;
  db->Delete(WriteOptions(), "002");
  db->Get(ReadOptions(), "002", &s1);
  cout<<s1<<endl;

  delete db;
  return 0;
}