C Interview Questions - 8

• What is the output of printf("%d")
• What will happen if I say delete this
• What is Dangling pointer?
• 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?.
• Is there any difference between a messageand method?
• If I ask you to write 'VI' editor in C++ - How you'll proceed?
• Difference between char name[] = “mindgrill q”; and char *name = “mindgrill q”;
• Should we use global variables?
• Parsing HTML or XML document with C++
• What is 'self assignment'?
• Difference between how virtual and non-virtual member functions are called
• Finding shortest path aka Dijkstra's algorithm and backtracking
• Doing permutations and combinations in C++
• Difference between "vector" and "array"?
• How to write a program such that it will delete itself after exectution?
• Can we generate a C++ source code from the binary file?
• What are inline functions?
• Talk sometiming about profiling?
• How many lines of code you have written for a single program?
• What is "strstream" ?
• How to write Multithreaded applications using C++?
• Explain "passing by value", "passing by pointer" and "passing by reference"
• Write any small program that will compile in "C" but not in "C++"
• Have you heard of "mutable" keyword?
• What is a "RTTI"?
• Is there something that I can do in C and not in C++?
• Why preincrement operator is faster than postincrement?
• What is the difference between "calloc" and "malloc"?
• What will happen if I allocate memory using "new" and free it using "free" or allocate sing "calloc" and free it using "delete"?
• What is Memory Alignment?
• Explain working of printf.
• Difference between "printf" and "sprintf".
• What is "map" in STL?
• When shall I use Multiple Inheritance?
• What are the techniques you use for debugging?
• How to reduce a final size of executable?
• Give 2 examples of a code optimization.