You cannot submit for this problem because the homework's deadline is due.

Pretest

Pretest for lemondb.

NOTE: the test case is very weak.

Hints for compilation

$ mkdir build && cd build
$ cmake -DCMAKE_C_COMPILER=/usr/bin/clang -DCMAKE_CXX_COMPILER=/usr/bin/clang++ ../src
$ cmake --build .

Then you will get a binary called lemondb.

Hints for running

The working directory for the test case is shown below.

$ tree .
├── db
│   ├── t1.tbl
│   └── t2.tbl
├── lemondb
└── test.query

1 directory, 4 files

Then following command runs with nothing to stdin.

$ ./lemondb --listen test.query