# 2021q1 Homework1 (lab0)

contributed by < `PeterYang` >

###### tags: `linux2021`

## Outline
[TOC]

## 環境

$ uname -a
Linux nvr-OptiPlex-XE3 4.15.0-128-generic #131~16.04.1-Ubuntu SMP Wed Dec 9 17:33:47 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

## 簡介
lab 中使用許多工具協助養成良好的寫程式習慣，包含：
* Git pre-commit hook
* [git-good-commit](https://github.com/tommarshall/git-good-commit): 學習撰寫良好的 Git commit message
* [cppcheck](http://cppcheck.sourceforge.net/): 靜態程式碼分析工具
* [clang-format](https://clang.llvm.org/docs/ClangFormat.html): 確保一致的程式風格
* [GNU Aspell](http://aspell.net/): 拼字檢查
* [valgrind](https://valgrind.org/): 動態程式分析工具
* [AddressSanitizer](https://github.com/google/sanitizers/wiki/AddressSanitizer): 檢查記憶體的使

等......

詳細的環境設定以及lab的相關說明請參閱 [I01: lab0](https://hackmd.io/@sysprog/2020-lab0?fbclid=IwAR2YOjtMYzE_kB5vqvBUOSM9OlR5hgvz7NHUGg21NOcN9Hb8vccxEV-yC3o)、[C Programming Lab: Assessing Your C Programming Skills](https://www.cs.cmu.edu/afs/cs/academic/class/15213-s20/www/labs/cprogramminglab.pdf)

## 如何測試
測試所有的測資:
> make test

針對單一個測試可以用:
> ./qtest -f <command file>

得到更詳細的程式運行狀況，方便修改程式的錯誤