程序員面試題目

2024年3月29日發(作者：研學機構)

The Questions for Developing Applicants

Plea note: The questions with asterisk (*) can not be empty.

Describe general experience with:

1. LAN's, WAN.

2. Unix, Windows

3. Programming Languages.

4.

Device Driver

General questions:

1. Describe an experience you feel proud of in programming, such as creatively resolving a programming

(coding, algorithms, structure or others)problem you encountered in the past.

2. What's your biggest project? What a role did you played in it?

3. What's difference between dealing with an English string and a Chine String?

4. Do you know about GB code, Big5 code, Unicode? Would you plea give me your understanding of

their relationship and difference?

5. Now I have an English application and its source code, such as a word processor. What would you do

to make it work correctly in Chine environment?

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The Questions for Developing Applicants

6. If you're free to choo a job, what would you like to do: marketing, tester engineer, software

programmer, project manager, or other? And why? Will you accept a different assignment other than the

job you like, such as tester engineer position?

C QUESTIONS:

1.* Explain the difference between "call by value" and "call by reference" in a programming language.

How do the apply to the C language?

call by value ：

調用時子程序得到的是參數值的副本，子程序中對形參的改變其實只是影響了該副本的值，但

在返回主程序后該副本會被丟棄，因此在主程序中按值調用的參數仍保持原來的值。

call by reference ：

調用時子程序得到的是實際參數的內存地址，因此在子程序中改變形參的值時，實際會導致對

該形參所對應的地址處的內存數據的變化，即直接修改的是主程序中的變量的值，返回主程序

后該參數所對應的變量值會產生變化。

2.* Explain how C pointers work. What are they really? How can they be ud? What are the most

uful/vital ways to u them?

變量的地址稱為變量的指針，即指針是一個內存單元的地址。

指針的基本形態有以下幾種：

（1）int *p; //p為指向整型數據的指針變量

（2）int *p[n]; //定義指針數組p

（3）int *p(); //p為指針函數，返回一個指向整型數據的指針

（4）int (*p)(); //p為指向函數的指針，該函數返回一個整型值

（5）int (*p)[n] //p為指向含有n個元素的一維數組的指針變量

（6）int **p; //p為指向指針的指針，被指向的指針指向一個整型數據

（7）int(**p)[n] //p是一個指向另一個指針變量的指針變量，被指向的指針變量指向一個含

有n個整型數據的一維數組

（8）int *p()[n] //p為返回整型指針數組（首地址）的函數

（9）int (*p[])() //p為指向返回整型數值函數的指針數組

指針的使用：

（1）指針和數組

對于數組a[i]表示數組a的第i+1個變量，a是數組名，表示該數組的首地址。即a與

&a[0]等價，而p=a;通過p來訪問數組元素。

（a）p,a,與&a[0]它們之間是等價的，都表示數組a的首地址

（b）int *p=a;*p=1;為所指向的存儲單元賦值1

（c）int *p=a;表達式p+1為指向p的下一個存儲單元

（d）表達式p+i為指向p后第i個元素。a[i],*(a+i),*(p+i)都表示數組a的第i個元素

（2）指針與函數參數的選擇

如果用數組名作為函數參數，實參數組名代表數組首地址，而形參是用來接收從實參

傳遞過來的首地址，因此，形參應該是一個指針變量，因為只有指針變量才能存放地址。

（3）指針與鏈表

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