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Best 50 C++ Interview Questions & Answers by "Sruti" a.maheshi

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1 Best 50 C++ Interview Questions & Answers

Sun Dec 7, 2014 8:38 pm (PST) . Posted by:

"Sruti" a.maheshi

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| C++ INTERVIEW QUESTIONS |
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| C++ Interview Questions |
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- When do use "const" reference arguments in function?
http://www.coolinterview.com/interview/29496/

- What is the dangling pointer in c++
http://www.coolinterview.com/interview/29519/

- What is the difference between a copy constructor and an overloaded assignment operator?
http://www.coolinterview.com/interview/29380/

- ell how to check whether a linked list is circular.
http://www.coolinterview.com/interview/29460/

- What is the difference between char a[] = "string"; and char *p = "string"; ?
http://www.coolinterview.com/interview/29389/

- Write a short code using C++ to print out all odd number from 1 to 100 using a for loop
http://www.coolinterview.com/interview/29458/

- What is class invariant?
http://www.coolinterview.com/interview/29343/

- When are temporary variables created by C++ compiler?
http://www.coolinterview.com/interview/29497/

- What is the difference between Mutex and Binary semaphore?
http://www.coolinterview.com/interview/29486/

- What is a Makefile?
http://www.coolinterview.com/interview/29490/

- How can you quickly find the number of elements stored in a a) static array b) dynamic array ? Why is it difficult to store linked list in an array? How can you find the nodes with repetetive data in a linked list?
http://www.coolinterview.com/interview/29487/

- Will the inline function be compiled as the inline function always? Justify.
http://www.coolinterview.com/interview/29507/

- What are storage qualifiers in C++ ?
http://www.coolinterview.com/interview/29495/

- How do I initialize a pointer to a function?
http://www.coolinterview.com/interview/29371/

- What are the main underlying concepts of object orientation?
http://www.coolinterview.com/interview/29504/

- Is there anything you can do in C++ that you cannot do in C?
http://www.coolinterview.com/interview/29309/

- Explain term POLIMORPHISM and give an example using eg. SHAPE object: If I have a base class SHAPE, how would I define DRAW methods for two objects CIRCLE and SQUARE
http://www.coolinterview.com/interview/29408/

- What are the differences between new and malloc?
http://www.coolinterview.com/interview/29322/

- What do u meant by "SBI" of an object?
http://www.coolinterview.com/interview/29503/

- What is a COPY CONSTRUCTOR and when is it called?
http://www.coolinterview.com/interview/29405/

- What are 2 ways of exporting a function from a DLL?
http://www.coolinterview.com/interview/29463/

- What do you meant by active and passive objects
http://www.coolinterview.com/interview/29501/

- Write a program that ask for user input from 5 to 9 then calculate the average
http://www.coolinterview.com/interview/29457/

- What is Memory alignment??
http://www.coolinterview.com/interview/29498/

- What is a mixin class?
http://www.coolinterview.com/interview/29518/

- When can you tell that a memory leak will occur?
http://www.coolinterview.com/interview/29514/

- What is the difference between Stack and Queue?
http://www.coolinterview.com/interview/29323/

- What is the difference between an external iterator and an internal iterator? Describe an
http://www.coolinterview.com/interview/29401/

- Is it possible to have Virtual Constructor? If yes, how? If not, Why not possible ?
http://www.coolinterview.com/interview/29305/

- What's the output of the following program? Why? #include main() { typedef union { int a; char b[10]; float c; } Union; Union x,y = {100}; x.a = 50; strcpy(x.b,"hello"); x.c = 21.50; printf("Union x : %d %s %f ",x.a,x.b,x.c ); printf("Union y :%d %s%f ",y.a,y.b,y.c); } Given inputs X, Y, Z and operations | and & (meaning bitwise OR and AND, respectively) What is output equal to in
http://www.coolinterview.com/interview/29392/

- Anything wrong with this code? T *p = 0; delete p;
http://www.coolinterview.com/interview/29523/

- Input three positive integers representing the sides of triangle and determine wether they form a valid triangle.hint: in triangle the sum of any two sides must always be greater than the third side
http://www.coolinterview.com/interview/34353/

- what should the 64-bit integer type on new,64-bit machines be?
http://www.coolinterview.com/interview/34119/

- How do you write a function that can reverse a linked-list?
http://www.coolinterview.com/interview/29426/

- Define precondition and post-condition to a member function.
http://www.coolinterview.com/interview/29345/

- Differentiate between a deep copy and a shallow copy?
http://www.coolinterview.com/interview/29512/

- How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
http://www.coolinterview.com/interview/29390/

- How do you know that your class needs a virtual destructor?
http://www.coolinterview.com/interview/29316/

- How can you tell what shell you are running on UNIX system?
http://www.coolinterview.com/interview/29452/

- Define a constructor - What it is and how it might be called (2 methods).
http://www.coolinterview.com/interview/29524/

- What is conversion constructor?
http://www.coolinterview.com/interview/29493/

- What is an opaque pointer?
http://www.coolinterview.com/interview/29511/

- Differentiate persistent & non-persistent objects?
http://www.coolinterview.com/interview/29502/

- What does extern mean in a function declaration?
http://www.coolinterview.com/interview/29391/

- What is an incomplete type?
http://www.coolinterview.com/interview/29437/

- Tell how to check whether a linked list is circular.
http://www.coolinterview.com/interview/29418/

- What's the best way to declare and define global variables?
http://www.coolinterview.com/interview/29428/

- What are all the implicit member functions of the class? Or what are all the functions which compiler implements for us if we don't define one.??
http://www.coolinterview.com/interview/29492/

- What is a mutable member?
http://www.coolinterview.com/interview/29525/

- How can a '::' operator be used as unary operator?
http://www.coolinterview.com/interview/29505/

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