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)

1956

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?

2030

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 3720

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 6959

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

2633

what is ltti

Unisys,

1 6216

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 3331

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

Infosys,

1 4796

Name a typical usage of polymorphism

3 5869

what is the difference between containership and inheritence?

1 18467

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 4855

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 6351

what is virtual function?

3 5582

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

Value Labs,

3 7194

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

4 6011

Un-Answered Questions { C++ }

Is c++ fully object oriented?

973

Explain the static storage classes in c++.

1271

List the types of polymorphism in c++?

1106

Explain this pointer?

1068

What is decltype c++?

1000

What are the 2 main types of data structures?

1125

What is an inline function in c++?

1116

What are the classes in c++?

1112

What do you know about Volatile keyword in C++? Explain with an example code.

1042

Do class declarations end with a semicolon?

1083

What is the difference between object-oriented programming and procedural programming?

1235

Why can’t you call invariants() as the first line of your constructor?

1026

Write a recursive program to calculate factorial in c++.

1082

To solve the 8 Queens problem, which algorithm is used?

1020

Why multiple inheritance is not possible?

1074

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