C++ Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

STL (140)
OOPS (873)
C++ General (2409)

C++ Interview Questions

Questions Answers Views Company eMail

Write a single instruction that will store an EVEN random integer between 54 and 212 inclusive in the variable myran. (NOTE only generate EVEN random numbers)

1886

Given the following seqment of code containing a group of nested if instructions: y = 9; if ((x==3) || (x == 5)) y++; else if (x == 2) y *= 2; else if (x == ) y-= 7; else y = 8; if the value of x is 4 before the nested IFs are executed, what is the value of y after the nested IFs are executed?

1962

Given the following seqment of code containing a group of nested if instructions: y = 9; if ((x==3) || (x == 5)) y++; else if (x == 2) y *= 2; else if (x == 4 ) y-= 7; else y = 8; Enter a segment of code (without any IF statements) that does exectly the same thing using the switch structure.

1 3659

Given the following function definition: int doit(int &x, int y, int &z) { x = 3*x; y = y + 5; z = x+y; return z - 4; } int a = 5, b = 7, c = 9, d = 11; d = doit(a,b,c);

2 6871

Write a C/C++ program that connects to a MySQL server and checks if the InnoDB plug-in is installed on it. If so, your program should print the maximum number of concurrent threads that the InnoDB plug-in can create

2588

what is ltti

Unisys,

1 6081

In OverLoading concept,Why they are not consider return value and why they are consider only parameters in method? For ex: public int Add(int a,int b){...} public String Add(int a,int b){...}

1 3251

#include void main() { class x { public: int func(int) { cout<<"cool"; return 1; } } }

Infosys,

1 4697

Name a typical usage of polymorphism

3 5749

what is the difference between containership and inheritence?

1 18384

Write a program and call it sortcheck.cpp which receives 10 numbers from input and checks whether these numbers are in ascending order or not. You are not allowed to use arrays. You should not define more than three variables

BirlaSoft, Crayonz,

2 4761

write a c++ program that gives output 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 using looping statement

2 6245

what is virtual function?

3 5436

what i oops concept, how many languages supports oops concept?

Value Labs,

3 7052

Is following functions are said to be overloaded? int add(int a,int b) char *add(int a,int b)

4 5842

Un-Answered Questions { C++ }

Explain mutable storage class specifier.

1038

What are the 3 pillars of oop?

1119

Write a note about the virtual member function?

1013

How a macro differs from a template?

1115

Which bit wise operator is suitable for putting on a particular bit in a number?

1154

Describe the advantage of an external iterator.

997

What is the basic concept of c++?

969

write a program that takes input in digits and display the result in words from 1 to 1000

2378

What are the advantages of using pointers in a program?

1106

Describe these concepts: Polymorphism, Inheritance and Abstraction.

1154

Explain what data encapsulation is in c++?

1048

What are oops functions?

970

What is the use of :: operator in c++?

1074

What is a class and object?

1015

Which is the best c++ compiler for beginners?

1037

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