C++ Interview Questions & Answers

Below we have listed all the C++ Interview Questions and answers. Feel free to comment on any C++ Interview Questions or answer by the comment feature available on the page.

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C++ is an object oriented programming (OOP) language, developed by Bjarne Stroustrup, and is an extension of C language. It is therefore possible to code C++ in a "C style" or "object-oriented style." It has imperative, object-oriented and generic programming features, while also providing facilities for low-level memory manipulation. It was designed with a bias toward system programming and embedded, resource-constrained and large systems, with performance, efficiency and flexibility of use as its design highlights.

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	Question	Rating	View Answer
	What is a container class? What are the types of container classes?		View Answer
	What is pure virtual function?		View Answer
	What is a COPY CONSTRUCTOR and when is it called?		View Answer
	mutable" Keyword - What is "mutable"?		View Answer
	What are the advantages and disadvantages of B-star trees over Binary trees?		View Answer
	What are the debugging methods you use when came across a problem?		View Answer
	What is a mutable member?		View Answer
	What are virtual functions?		View Answer
	What do u meant by "SBI" of an object?		View Answer
	Are there any new intrinsic (built-in) data types?		View Answer
	Explain about reference parameter?		View Answer
	What do you mean by Stack unwinding?		View Answer
	How many ways are there to initialize an int with a constant?		View Answer
	What does extern mean in a function declaration?		View Answer
	What is virtual destructors? Why they are used?		View Answer
	What?s the output of the following program? Why? #include <stdio.h> 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		View Answer
	What issue do auto_ptr objects address?		View Answer
	Why do C++ compilers need name mangling?		View Answer
	What are the advantages of using cin and cout compared to scanf(...) and printf(...), respectively?		View Answer
	How should runtime errors be handled in C++?		View Answer

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