---
title: joe-U16(徐郁淞)
categories: User
...

學歷
-----------------------
- 臺北科技大學 電機工程系(2016-2020)
- 成功大學    資訊所(2020~)

聯絡資訊
-----------------------
- Email: `tand23744@gmail.com`
- GitHub: [joe-U16](https://github.com/joe-U16)

2020秋季班 個人評量
=======================

(秋季班)作業及筆記
-----------------------
- [lab0](https://hackmd.io/@joe-U16/rJa33IG4P) /
[GitHub](https://github.com/joe-U16/lab0-c)
- [quiz1](https://hackmd.io/@joe-U16/rkKLwyFNv) /
[GitHub](https://github.com/joe-U16/NCKU-system-software/tree/main/quiz1)
- [quiz2](https://hackmd.io/@joe-U16/B1G8xMjrv) / 
[GitHub](https://github.com/joe-U16/NCKU-system-software/tree/main/quiz2)
- [quiz3](https://hackmd.io/@joe-U16/SkNycSsrw) / 
[GitHub](https://github.com/joe-U16/NCKU-system-software/tree/main/quiz3)
- [quiz4](https://hackmd.io/@joe-U16/ry7ILIp8P)
- [quiz5](https://hackmd.io/@joe-U16/HJYSuY6Lw) / 
[GitHub](https://github.com/joe-U16/NCKU-system-software/tree/main/quiz5)
- [quiz6](https://hackmd.io/@joe-U16/rJrCMFVjD)
- [kcalc](https://hackmd.io/@joe-U16/rJwLELO3P) / 
[GitHub](https://github.com/joe-U16/kcalc-fixed)

題目：
-----------------------
a) 知道 x - y < 0 敘述為何不能寫為 x < y 嗎？ (CS:APP 第 2 章)

Ans: 前者使用減法，可能造成整數溢位，導致兩者行為不一致。

e.g.
```
>>> print 0U-1<0
$1 = 0
>>> print 0U < 1
$2 = 1
```

c) 知道 void (*signal(int sig, void (*handler)(int))) (int); 這樣的宣告該如何解讀嗎？

Ans: 

1. signal is a pointer to a function that takes two parameters:

    1. sig is a parameter to an int and
    2. handler is a pointer parameter takes int to void
2. and takes int
3. and returns to void



(秋季班)心得
-----------------------