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

C++ General Interview Questions

Questions Answers Views Company eMail

what is an array

20 20129

Write a function which takes a character array as input and reverses it in place.

Lehman Brothers, Vision Infotech,

2 8924

Write a String class which has: 1) default constructor 2) copy constructor 3) destructor 4) equality operator similar to strcmp 5) constructor which takes a character array parameter 6) stream << operator

HCL, Lehman Brothers, Zoomerang,

2 9150

In C++ cout is: a) object b) class c) something else

Infosys, Lehman Brothers,

11 29833

What is the output of: String a1 = "Hello"; String a2 = "world!"; String* s1 = &a2; String& s2 = a1; s1 = &a1; s2 = a2; std::cout << *s1 << " " << s2 << std::endl;

Lehman Brothers,

4 9223

Why would you make a destructor virtual?

Lehman Brothers,

3 9132

Is there any difference between dlearations int* x and int *x? If so tell me the difference?

Lason,

16 30983

What C++ libraries are you proficient with?

Google,

1 9139

Which algorithm do you like the most? Why?

Google,

2 8666

Have you used MSVC? What do you think of it?

Google,

2 8770

What is design pattern?

Samsung,

2 8824

What are advantages and disadvantages of Design patterns?

IBM, Vodafone,

7 110606

whats the size of class EXP on 32 bit processor? class EXP { char c1; char c2; int i1; int i2; char *ptr; static int mem; };

Huawei,

5 11011

what is importance of data sturture in a programming language?

L&T, TCS, Wipro,

22 48810

If P is the population on the first day of the year, B is the birth rate, and D is the death rate, the estimated population at the end of the year is given by the formula: The population growth rate is given by the formula: B – D Write a program that prompts the user to enter the starting population, birth and death rates, and n, the number of years. The program should then calculate and print the estimated population after n years. Your program must have at least the following functions: 1. growthRate: This function takes its parameters the birth and death rates, and it returns the population growth rate. 2. estimatedPopulation: This function takes its parameters the current population, population growth rate, and n, the number of years. It returns the estimated population after n years Your program should not accept a negative birth rate, negative death rate, or a population less than 2.

1 6217

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Un-Answered Questions { C++ General }

Write a program to concatenate two strings.

1094

What is a buffer c++?

1063

Which c++ compiler is best?

1160

Is c++ a programming language?

1077

What is a manipulative person?

1019

Why do we use using namespace std in c++?

1083

What is a sequence in c++?

1018

What is private public protected in c++?

1053

List the types of polymorphism in c++?

1106

Is c++ harder than java?

1071

Keyword mean in declaration?

1061

Describe friend function & its advantages.

1135

Name the debugging methods that are used to solve problems?

1091

Evaluate the following expression as C++ would do :8 * 9 + 2 * 5 a) 82 b) 79 c) 370 d) list

1003

an operation between an integer and real always yeilds a) integer result b) real result c) float result

1155

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