- what is static member function
- Static function
2. cannot-move-virtual-function-outside-header
3. c-virtual-table-layout-of-mimultiple-inheritance
4. multiple-inheritance-considered-useful/184402074
- Partial Template specialization
- Difference between template and macro
- What is virtual.
- Where is virtual table reside
- Vtable is created at the compile time. it reside into the compiler.
- where is virtual pointer reside
- Virtual Pointer reside into the Object.
- are virtual pointer inheritable
- Yes
- How virtual table determine the function
- Look into virtual Section
- template is polymorphic
- template is compile time Polymorphism
- what is static variable
- a variable whose scope is limited to the file
- does static variable initialization order matter for the class
- Ans : Yes
- static-variables-release-order
- statickeyword
- can static function initialize static variable
- No
- Error: error: invalid use of qualified-name ‘sample::i’
- how delete operator know to delete the array size
- should we check with null pointer if we allocate memory with new
- No Need
- if we give definition virtual function in derived class that will work
- No
- How can you create smart pointer
- Advantage of overload new operator
- what-are-the-differences-between-a-pointer-variable-and-a-reference-variable-in
- What's use of void pointer
- Top 3 horse puzzle
- Volatile keyword
- can c++ check Index out of bound array at compile time
- Ans : No
- Can we check Index out of bound array at compile time
- If we have same variable in the base class than into derived class how will you resolve this issue
- Scope resolution oeprator
- what is basic concept of OOPS
- encapsulation vs abstraction
- maximum sum of non consecutive element
- maximum sum such that no two element are adjacent
- What is runtime binding
- Virtual function
- what is storage variable
- What is storage class
- what is ps -elf
- We can print the all process along with the full format.
- find two string in one pattern
- how will you delete 5 times older file
- find /path/to/files* -mtime +5 -exec rm {} \;
- Virtual destructor and purpose
- Difference between macro and inline
- Name hiding
- Function overloading vs Function overriding
- when to use extern C keyword
- Interface Vs Abstract
- http://stackoverflow.com/questions/761194/interface-vs-abstract-class-general-oo
- When we talk about abstract classes we are defining characteristics of an object type; specifying what an object is.
- When we talk about an interface and define capabilities that we promise to provide, we are talking about establishing a contract about what the object can do.
- abstract-class-vs-interface-in-c
- difference-between-abstract-class-and-interface-in-python
- __new__ vs __init__
- what is __init__.py
- create object on stack and not in new
- virtual function in template.
- what-is-the-difference-between-char-s-and-char-s-in-c
- c-deprecated-conversion-from-string-constant-to-char
- class-members-that-are-objects-pointers-or-not-c
- explitcit constrctuor
- why-is-using-namespace-std-considered-bad-practice
- how-to-choose-between-map-and-unordered-map
- static_cast vs dynamic_cast
- is C++ pure object oriented language
- struct vs class in c++
- procedure language vs object oriented langauge
- why static does not const qualifier
- Find substring from string
- where local variable reside into compiler
- Reference tutorial
- How to load large file
- Difference between find , grep and cut
- find determine file information
- grep determine about string into file
- cut used to print some information
- what is linux file structure
- http://www.ahinc.com/linux101/structure.htm
- what is purpose of shared library
- what is purpose of locking thread
- Synchronization
- Thread syncronization
- what is this pointer
- implict pointer
- can we delete this pointer from destructor
- No
- can you write thread which do a mutex
- Why can't a derived class pointer point to a base class object without casting?
identify that it needs to delete some amount of memory
48. What is use of double pointer
49. What is use of function pointer. Where are we using it. how will it define it
50. What is purpose of function pointer
51. What is return optimization
52. why we need virtual base class. what will be the memory layout
53. How do we define virtual base class
54. In linux how will you identify 32 bit or 16 bit machine
55.where does vpointer reside into compiler?
56. what will be the size of following program
class sample class sample
{ {
public: public:
int a; char b;
char b; int a;
void fun1(); void fun2();
} }
57. what is structure padding
56. where does vpointer points?
58. where is the variable reside in compiler
59. why do we need stack for storing variable
60. what is type casting and where will you use.
61. what is upcasting and downcasting and where will you use
62. what is constructor initialization list and how does it work
63. how will you handle memory leak without using new/delete
64. what is scoped_ptr and how does it work.
65. can you perform min operation in O(1) time in stack
http://stackoverflow.com/questions/3492302/easy-interview-question-got-harder-given-numbers-1-100-find-the-missing-numbe
66. can you implement stack using linklist and why do you need it
http://thecodecracker.com/c-programming/implementation-of-stack-using-linked-list/
67. what is the time complexity of push/pop operation in stack
68. can you insert element in stack using O(1) time complexity
69. why do we handle exception through null
68. can we delete this pointer
69. should we check new operation if it fails to allocate memory
70.how will you identify multiple occurence of number in O(n) time complexity and O(1) space complexity
http://www.geeksforgeeks.org/archives/9755
71. how will you find missing number in O(1) time complexity
sum the number and subtract the missing number.
72. Can you print the address of stack element
73. can we virtual keyword in the derived class
http://www.cplusplus.com/forum/general/43554/
74. how can we access base class variable
http://www.cplusplus.com/forum/beginner/43497/
75. how can we prevent inheritance
http://www.cplusplus.com/forum/general/40079/
76. how can we prevent function overloading
http://www.cplusplus.com/forum/general/34203/
#include<iostream>
using namespace std;
class sample
{
public:
sample();
void fun(int a,int b)const;
void fun(int a,int b);
/*can not overload */
void fun2(int a,int b);
void fun2(const int a,const int b);
/* can not overloaded */
void fun3(int a,int b);
static void fun3(int a,int b);
/*can not overload */
void fun4(int *a,int *b);
void fun4(int a[],int b[]);
};
int main()
{
return 0;
}
http://www.cplusplus.com/forum/general/33990/
78. what is diffrence between const char char*
http://www.cplusplus.com/forum/general/33123/
79. how can we print vtable address
http://www.cplusplus.com/forum/general/33019/
80.
"Abhishek
Binary Tree key Point.
1.What is binary tree.
2. what is maximum height of binary tree
3. how much does binary tree contain maximum node
4. how will you traverse binary tree and explain type of traverse
5. what is binary search tree
6. how will you insert element/delete element in binary tree
7. can binary tree represent by linked list.
struct node
{
int data;
node *left;
node *right;
}
http://stackoverflow.com/questions/2130416/what-are-the-applications-of-binary-trees
9. Any live scenario which may you across in your programming for implementing binary tree
10.What is virtual base class
12. how is the memory layout of virtual base class
13. What is difference between static vs Global variable
http://c.ittoolbox.com/documents/difference-between-static-global-variable-12174
14. Reverse the linked list through recursion
15. http://programmerinterview.com/index.php/c-cplusplus/introduction
16. What is Heap Sort
http://www.exforsys.com/tutorials/c-algorithms/heap-sort.html
17. What is singleton design pattern
18. what is disadvantage of singleton design patter
http://blogs.msdn.com/b/scottdensmore/archive/2004/05/25/140827.aspx
19. In which Category,Will it be considered Design pattern
20. What is Factory Design Pattern.
21. What is abstract Design Pattern
22. What is diffirence between thread and process
23. What is diffirence between semaphore and mutex
24. http://kundansingh.com/interview/
25. http://www.geeksforgeeks.org/
26. http://technical-interview.com/C_Questions_1.aspx
27. http://www.thecareerplus.com/?page=home
Preparation Question
=================================
1. What is mutex.
2. what is semaphore
3. what is difference between mutex and semaphore
http://www.geeksforgeeks.org/archives/9102
4. Can you write simple mutex in c++
5. what is this pointer
6.Can we use delete operator in c++ for this pointer
http://geeksforgeeks.org/forum/topic/can-we-use-delete-operator-in-c-for-this-pointer
7. static member function can access this pointer
8. what is purpose of static vs shared vs dynamic library
9. Can we return multiple value from c function
http://www.cplusplus.com/forum/beginner/14581/
http://www.learncpp.com/cpp-tutorial/74a-returning-values-by-value-reference-and-address/
11.what is use of double pointer
http://www.daniweb.com/software-development/c/threads/69966
12. what is return value optimization
http://en.wikipedia.org/wiki/Return_value_optimization
13. What is structure padding
http://www.geeksforgeeks.org/archives/9705
http://clinuxpro.com/structure-padding
http://cboard.cprogramming.com/c-programming/137627-structure-padding.html
http://forums.techarena.in/software-development/1241260.htm
http://clinuxpro.com/how-to-avoid-structure-padding-using-pragma
14. what is type casting and where will you use
http://cppcoffe.blogspot.com/p/c-faq.html
http://www.cplusplus.com/doc/tutorial/typecasting/
15. can we handle memory leak without new
Yes with the boost library
16. can you find minimum element in stack in O(1) time.
http://www.geeksforgeeks.org/archives/14149
17. can you implement stack using linked list
Yes
18. should we check for NULL after new operation
No
19. how will you find the minimum element in O(1) time
n(n+1)/2 -(sum of n number)
http://www.indiabix.com/technical/interview-questions-and-answers/
20. What is rule of makefile
http://www.tutorialspoint.com/makefile/index.htm
21. http://www.cplusplus.com/doc/tutorial/dynamic/
22. http://javarevisited.blogspot.com/2011/03/10-find-command-in-unix-examples-basic.html
23. http://www.cplusplus.com/doc/tutorial/templates/
24. What is stack unwinding
25.This Pointer FAQ.
a) This can be used for member function
b)This can not be used into main function.
c)If we allocate memory through new destructor will not call automatic. We need to explicit call delete operator.
26)Pointer To array.
#include<iostream>
#include<malloc.h>
using namespace std;
#define MAXROW 4
#define MAXCOL 4
int main()
{
int (*p)[MAXROW]; /* Pointer to array */
cout<<sizeof(*p)<<endl; /* size of pointer */
cout<<sizeof(int)<<endl; /* size of int */
cout<<(sizeof(*p)/sizeof(int)); /* Resultant of this output */
p= new int [MAXROW][4]; /* Allocate memory with pointer to array */
/* Intialize the Pointer */
for(int i=0;i<MAXROW;i++)
{
for(int j=0;j<MAXCOL;j++)
{
p[i][j]= i;
cout<<p[i][j];
}
cout<<endl;
}
int **s;int **s1; /* Double Pointer */
s=(int**)malloc(MAXROW *sizeof(int*)); /* Allocate memory */
s1 = new int *[MAXROW];
for(int i=0;i<MAXROW ;i++)
{
s[i] = (int *)malloc(MAXROW * sizeof(int));
s1[i] = new int [MAXCOL];
}
int count=0;
for(int i=0;i<MAXROW;i++)
{
for(int j=0;j<MAXROW;j++)
{
s[i][j]=count++;
cout<<s[i][j];
}
cout<<endl;
}
Int *a1 = new int[5];
Int (*a2)[2] =new int [2][2];
27)What is static object and why we need them.
28) Should we do self assignment with copy constructor.
4. 29)Why we need static function.
The differences between a static member function and non-static member functions are as follows.
A static member function can access only static member data, static member functions and data and functions outsidethe class. A non-static member function can access all of the above including the static data member.
A static member function cannot be declared virtual, whereas a non-static member functions can be declared as virtual
In c, static function can be local to particular file.
30)What is static class.
A class which contain only the constructor and method
We can write throw and return statement into constructor..
7 Malloc and calloc and realloc http://www.cs.cf.ac.uk/Dave/C/node11.html
31)What is segmentation fault.
32)What is difference between sizeof and strlen
1 Inheritance Concept
#include<iostream>
using namespace std;
class base
{
public:
int i;
public:
base()
{
i=20;
cout<<" the value of i :"<<i<<endl;
}
void get_base()
{
cout<<" the value of i :"<<i<<endl;
}
};
class derived : public base
{
private:
int i;
public:
derived()
{
i=30;
base::i=40;
cout<<" the value of i"<<i<<endl;
}
void get_show()
{
cout<<" the value of i "<<i<<endl;
}
};
int main()
{
derived d;
d.get_show();
d.get_base();
return 0;
}
Concept:Data member can be change using scope operator
Virtual Point.
1).If we have pure virtual function than we will have vpointer into the
2). http://www.dreamincode.net/forums/topic/45816-detail-about-how-vptr-and-virtual-table-works
3).How many vtable create per class. is Vpointer part of the object
4).If we add virtual function and we need to provide the definition also. Otherwise we will get error.
5) Why we need virtual base class
http://www.learncpp.com/cpp-tutorial/118-virtual-base-classes/
6).http://www.phpcompiler.org/articles/virtualinheritance.html
7)http://drdobbs.com/cpp/184402074
2). http://www.dreamincode.net/forums/topic/45816-detail-about-how-vptr-and-virtual-table-works
3).How many vtable create per class. is Vpointer part of the object
4).If we add virtual function and we need to provide the definition also. Otherwise we will get error.
5) Why we need virtual base class
http://www.learncpp.com/cpp-tutorial/118-virtual-base-classes/
6).http://www.phpcompiler.org/articles/virtualinheritance.html
7)http://drdobbs.com/cpp/184402074
8)Why we need multiple inheritances.
General Question
1) What is time complexity?
2)What is conversion constructo
3)http://stackoverflow.com/questions/109023/best-algorithm-to-count-the-number-of-set-bits-in-a-32-bit-integer
4)what is size of reference variable
http://www.cplusplus.com/forum/general/53576/
5)http://en.wikipedia.org/wiki/Longest_common_substring_problem
4)what is size of reference variable
http://www.cplusplus.com/forum/general/53576/
5)http://en.wikipedia.org/wiki/Longest_common_substring_problem
7)We can create the abstract class object and also assign the derived class object.By default every constructor is inline function In the inheritance, we get constructor, destructor and assignment operator We have simple, multilevel and multiple inheritanc
So we write the following line I t does not call base class constructor and goes through
Derived class constructor.
Base *s= &der; (In compare base *s = new der)
8)What is Call back mechanism
9)Switch case better if else
http://www.blackwasp.co.uk/SpeedTestIfElseSwitch.aspx
10)Where the vtable stored into memory
It is depend compiler to compiler. Sometime it may store into ROM
11)Can you stop the name mangling
We can stop the name mangling using the extern keyword
This pointer can not be modified
12)What is difference between DLL and exe.
12)What is difference between DLL and exe.
16)hour and angle problem
http://en.wikipedia.org/wiki/Clock_angle_problem
http://www.f1gmat.com/problem-solving/clock-angles-math-problems
17) makefile
http://www.cs.colby.edu/maxwell/courses/tutorials/maketutor/
http://www.cs.umd.edu/class/fall2002/cmsc214/Tutorial/makefile.html
http://www.eng.hawaii.edu/Tutor/Make/
http://www.codeproject.com/Articles/31488/Makefiles-in-Linux-An-Overview
18) Some Good interview Question about HR
http://www.interviewquestionsanswers.net/in-what-areas-would-you-like-to-improve/
19)This Pointer with Inheritance:
http://frogchunk.com/documentation/lang/cpp/Multiple_inheritance_and_the_this_pointer.pdf
20) splay tree:
http://en.wikipedia.org/wiki/Splay_tree
21)
22)Design Pattern Question:
http://www.interqiew.com/tests?type=dp
23)Factorials and Trailing zeros
http://www.purplemath.com/modules/factzero.htm
24)http://www.cplusplus.com/forum/general/43943/
25)quick sort vs merge sort.
http://stackoverflow.com/questions/680541/quick-sort-vs-merge-sort
26)quick sort vs heap sort
http://stackoverflow.com/questions/2467751/quicksort-vs-heapsort
27)Input and CPU bound Process
http://stackoverflow.com/questions/868568/cpu-bound-and-i-o-bound
28)Sorting for duplicate number
http://en.algoritmy.net/article/40549/Counting-sort
29)Longest Common substring wiki
http://en.wikipedia.org/wiki/Longest_common_substring_problem
30)Prevent object in heap.
http://stackoverflow.com/questions/10985/how-to-prevent-an-object-being-created-on-the-heap
31)Smart Pointer
http://www.codeproject.com/Articles/15351/Implementing-a-simple-smart-pointer-in-c
32)Bit Manupilation:
http://stackoverflow.com/questions/1023901/a-quick-cheatsheet-on-using-a-bit-map-to-store-multiple-values
33)Makefile:
http://www.codeproject.com/Articles/31488/Makefiles-in-Linux-An-Overview
34)Some Data Structure Video
http://www.youtube.com/playlist?list=PL01A89F4E9E5F3ADE&feature=plcp
35)Why we need fucntion overloading
36)What is difference between where and having clause.
http://gouravverma.blogspot.com/2008/04/where-vs-having-difference-between.html
37)What is signal
http://www.alexonlinux.com/signal-handling-in-linux#sigaction%28%29_in_action
38)What is difference between cluster and non cluster index
http://sql-plsql.blogspot.com/2010/06/non-clustered-indexes.html
http://www.java2s.com/Tutorial/Oracle/0180__Index/0020__Create-Index.htm
39)What is difference between union and union all.
40)What is trigger
41)What is fork,vfork and how does create process inside system.
http://en.wikipedia.org/wiki/Fork_%28operating_system%29
42)What is kernal level thread and application level thred
43)What is kill and how did the remove the process
44)What is process lifecycle
45)What is difference between softlink and hardlink
http://www.techcuriosity.com/articles/linux/difference_between_Hard_Link_and_Soft_Link_in_Linux.php
http://www.maxi-pedia.com/difference+between+symbolic+link+and+hard+link
46)What is main difference between find and grep except file searching
47)What is difference between more and page.
48)When the this pointer create and what do you know about this pointer.
http://stackoverflow.com/questions/2483679/when-is-this-pointer-initialized-in-c
49) What is object chaining and how does the compiler interpret the object chaining.
50) http://stackoverflow.com/questions/2483679/when-is-this-pointer-initialized-in-c
51)Pointer
http://tufangorel.blogspot.com/2011/10/double-pointer-operations-in-c.html
52)
53)
54)is static member inherited
55)is operator overloading inherited
56)do we have alternative of void pointer
57)what is difference between vector and set
58)Main info.
http://www.thegeekstuff.com/2011/10/c-program-to-an-executable/
59)Friend function limitation.
http://stackoverflow.com/questions/3933637/why-friend-function-cant-be-used-for-overloading-assignment-operator
60)Create binary tree using array
61)Which data structure you will use for storing large data base
62)Reverse a link list without affecting another one.
63)Some Technical Question
http://technical-interview.com/C_Questions_1.aspx
Aircom Internation
C++
1) what are the basic concept of OOPS2) What is Polymorphism
3) What is compile time Polymorphism
4) is template compile time Polymorphism
5) What is difference between shallow copy and deep copy
6) What is singleton pattern.Can you write code for that
7) What is facade pattern.
8) What is observer pattern
9) What is virtual inheritance
9) What is diamond shape problem
10) if base class one virtual function and derived class also contain virtual function.How many vtable create
11) When is vtable create ?
12) When is vpointer create ?
13) Can you explain vtable
14) Can you explain the compilation process
15) How the executable execute into system
16) What is the reason behind to decide default argument as trailer argument
17) Why do we need function overloading?
18) Why do we need function overriding?
19) Why do you need static object?.
20) What is static function?.
21) if Class B is Friend of A.Class C is Friend of B.What is the relation between A to C
Linux
1) what is sed command
2) what is awk command
3) what is tee command
4) what is difference between grep and find command
5) what is make file rule
6) Find the list of all file which does not contain particular string
7) what is touch command
8) what is main purpose of touch command
9) How will you copy from one machine to another machine
10)how will you delete a line in vi editor
11)How will you delete a word in vi editor
12)How will you delete a single character in vi editor
13)How will you execute a shell command within vi editor.(i.e) you have already
open file than after you want to execute shell command. How will you execute
shell command
14)How will you find a string into only particular directory and not recursive directory
15) what is max depth into Linux command
16)How will you search a particular word into vi editor
17)How will you do substitution into vi editor
How will you design scale system.
Template specialization- physical-structure-and-c-part-1-a-first-look
- software Architecture & Design (Udacity)
- software-architecture-cheat-blog-1-design-principl
- a-practical-approach-to-computer-systems-design
2. Exception list
3. polymorphism in Python
- python-inheritance-and-polymorphism
- practical-example-of-polymorphism
- how-does-pythons-super-work-with-multiple-inheritance
4. Multiple Inheritance
5. Multithreading vs Multiprocessing
6. difference between abstraction and encapsulation?
AMD
1. In diamond shape problem, How will you set base class variable
2.The constructor should throw exception or not
3. In non virtual class, it should have virtual destrctor
4.How will I read into middle node of linked list
5. #deefine or const which is better in coding guideline
6. Can pure virtual function have function body?
7.how will you write final class
8.
9.serialization, generator and decorator in Python
10.template specilization
11. what is demon process
http://www.enderunix.org/docs/eng/daemon.php
11. what is demon process
http://www.enderunix.org/docs/eng/daemon.php
