# Phison SWE
###### tags: `Interviews`

## Question
1. what is union? In the example code, size of union = ?

2. pointer and integer array
3. pointer and char array(string)
4. pointer with prefix and postfix increment or decrement
5. static 的意義
6. const 的意義
7. 實作四捨五入法，但不能用if/switch，只能用+-*/和型別轉換