收集的一些嵌入式软件开发工程师面试题

1、收集的一些嵌入式软件开发工程师面试题1 .什么是平衡二叉树 编写一个删除平衡二叉树的程序2 .写一个程序，求有向有权图两点之间的最小权3 .根据你的理解，写出Cstring类的构造函数和析构函数4 .使用C语言实现对ini文件的访问，使程序可以对int ,double , 字符串类进行读写。5 .n xn个方格(n为任意整数)，定义若两个格有公共边则称两 个格相邻。现将 个格中的N个格子图黑，使每个格子都与黑格子相 邻。试编程，使N最小。1.static变量和static函数各有什么特点3 .描述一下嵌入式基于ROM的运行方式基于ram的运行方式有 什么区别。4 .task有几种状态5 .ta

2、sk有几种通讯方式6 .C函数允许重入吗7 .嵌入式操作系统和通用操作系统有什么差别一面，技术面(1) VxWorks、uc/OS、Palm嵌入式系统操作系统的区别(2)做嵌入式软件开发和普通桌面软件开发有什么区别(3) c语言问题，union和struct的区别（4） sizeof（ 一大堆变量），如果用这个函数分配内存的大小一定 与定义相同吗（5）解释什么是优先级反转。Can structures be passed to the functions by valueWhy cannot arrays be passed by values to functionsAdvantages a

3、nd disadvantages of using macro and inline functionsWhat happens when recursion functions are declared inlineScope of static variablesDifference betweenobject orientedand object basedlanguagesMultiple inheritanceobjects contain howmany multiplyinherited ancestorWhat are the 4 different types of inhe

4、ritance relationshipHow would you find out the no of instance of a classIs java a pure object oriented language WhyOrder of constructor and destructor call in case of multiple inheritanceCan u have inline virtual functions in a classWhen you inherit a class using private keyword which members of bas

5、e class are visible to the derived classWhat is the output of printf( nab bcd ref ); - ef#define cat(x,y) x#y concatenates x to y. But cat(cat(1,2),3) does not expand but gives preprocessor warning. WhyCan you have constant volatile variable Yes, you can have a volatile pointer+*ip increments what i

6、t increments what ip points toOperations involving unsigned and signed - unsigned will be converted to signeda+b - (a+)+bmalloc(sizeof(0) will return valid pointermain() fork();fork();fork();printf( hello world ); will print 8times.Array of pts to functions void (*fptr10)()Which way of writing infin

7、ite loops is more efficient than others there are 3ways.# error what it doesHow is function itoa() writtenWho to know wether systemuses big endian or little endian format and how to convert among themWhat is interrupt latencyWhat is forward reference w.r.t. pointers in cHow is generic list manipulat

8、ion function written whichaccepts elements of any kindWhat is the difference between hard real-time and soft real-time OSWhat is interrupt latency How can you recuce itWhat is the differnce between embedded systems and the system in which rtos is runningHow can you define a structure with bit field

9、membersWhat are the features different in pSOS and vxWorksHow do you write a function which takes 2 arguments a byte and a field in the byte and returns the value of the field in that byteWhat are the different storage classes in CWhat are the different qualifiers in CWhat are the different BSD and SVR4 communication mechanisms一位资深的嵌入式项目经理曾这样对我说：搞嵌入式要往下走，要搞底层要搞算法，因为它们比较有前途。Embedded firmware interview questions1 . Write function in C that gets array of chars, and search for