C++ Interview Questions
C interview questions
- What does static variable mean?
- What is a pointer?
- What is a structure?
- What are the differences between structures and arrays?
- In header files whether functions are declared or defined?
- What are the differences between malloc() and calloc()?
- What are macros? What are the advantages and disadvantages?
- Difference between pass by reference and pass by value?
- What is static identifier?
- Where are the auto variables stored?
- Where does global, static, local, register variables, free memory and C Program instructions get stored?
- Difference between arrays and linked list?
Programming Interviews Questions
- How can you defined OOP?
- How can you use OOP in your projects/products/applications?
- What is copy constructor?
- How many types of copy constructor are there?
- What shallow copy constructor does/behaves?
- Does C++ support copy constructor?
- Does Java support copy constructor?
- (If the answer to the previous question was correct) Why doesn’t Java support copy constructor?
- What is software life cycle?
C & C++ Questions for interviews
- What is the output of printf(”%d”)
- What will happen if I say delete this
- Difference between “C structure” and “C++ structure”.
- Diffrence between a “assignment operator” and a “copy constructor”
- What is the difference between “overloading” and “overridding”?
- Explain the need for “Virtual Destructor”.
- Can we have “Virtual Constructors”?
- What are the different types of polymorphism?
- What are Virtual Functions? How to implement virtual functions in “C”
- What are the different types of Storage classes?
- What is Namespace?
- What are the types of STL containers?.
- Difference between “vector” and “array”?
Windows Programming Interview Questions
- What are kernel objects? - - Several types of kernel objects, such as access token objects, event objects, file objects, file-mapping objects, I/O completion port objects, job objects, mailslot objects, mutex objects, pipe objects, process objects, semaphore objects, thread objects, and waitable timer objects.
- What is a kernel object? - Each kernel object is simply a memory block allocated by the kernel and is accessible only by the kernel. This memory block is a data structure whose members maintain information about the object. Some members (security descriptor, usage count, and so on) are the same across all object types, but most are specific to a particular object type. For example, a process object has a process ID, a base priority, and an exit code, whereas a file object has a byte offset, a sharing mode, and an open mode.
Windows Programming Interview Questions II
- What is handle? - Handle value is actually the index into the process’s handle table that identifies where the kernel object’s information is stored.
- How the handle helps in manipulating the kernel objects? - Whenever you call a function that accepts a kernel object handle as an argument, you pass the value returned by one of the Create* functions. Internally, the function looks in your process’s handle table to get the address of the kernel object you want to manipulate and then manipulates the object’s data structure in a well-defined fashion.
