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

How is the using() pattern useful? What is IDisposable? How does it support deterministic finalization?

IntraLogic,

1 14461

Contrast OOP and SOA. What are tenets of each?

Siebel Systems, Wipro,

1 17696

why c++ is called OOPS? waht is inherutance? what is compiler?

5 16921

What normal C constructs work differently in C++?

2 5816

Why and when is a virtual destructor needed?

5 16920

How do I open binary files?

1 5408

Why a "operator=(...)" when there is a copy ctor?

2 6251

How is an Abstract Base Class(ABC) related to an "Abstract Data Type" (ADT)

2 7191

what is the behaviour of C and C++ compiler for the below statements. int *p; p = malloc(100); Is the behaviour same ? or different ?

2 5822

Find out the bug in this code,because of that this code will not compile....... #include #include #include using namespace std; class balance { double cur_bal; char name[80]; public: balance(double n, char *s) { cur_bal = n; strcpy(name, s); } ~balance() { cout << "Destructing "; cout << name << "\n"; } void set(double n, char *s) { cur_bal = n; strcpy(name, s); } void get_bal(double &n, char *s) { n = cur_bal; strcpy(s, name); } }; int main() { balance *p; char s[80]; double n; int i; try { p = new balance [3]; // allocate entire array } catch (bad_alloc xa) { cout << "Allocation Failure\n"; return 1; }

Impetus,

2 6595

what is meaning of isa and hsa

1 7846

What is the output of printf("%d")?

CTS, HCL, Infosys, TCS, Winit, Wipro,

58 75433

What will happen if when say delete this ?

7 16236

What is the Difference between "C structure" and "C++ structure"?

12 50772

What is the Diffrence between a "assignment operator" and a "copy constructor"?

Wipro,

3 8461

Un-Answered Questions { C++ }

Is swift faster than go?

1100

What is the difference between delegation and implemented-in-terms-of?

1006

There are 100 students in a class. The management keep information in two tables. Those two tables are given like Roll no Name Age 001 ABC 15 002 XYZ 14 and Roll No Subject Marks 001 Math 75 001 Physics 55 002 Math 68 001 Hindi 69 They want the information like this Roll No Name Hindi Physics Math Total 001 ABC 69 55 75 199 002 XYZ 68 74 84 226 And Roll No Suject Highest 001 Math 98 007 Physics 84 021 Hindi 74 All 275 All information is kept in structure in main memory. You have to find last two tables.

3012

Name the debugging methods that are used to solve problems?

1090

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

1213

What are libraries in c++?

1070

Can I learn c++ in a week?

1074

What is pointer with example?

1060

What language is oop?

1009

Why interface is used?

1020

What is string in c++ programming?

1192

Do you know about C++ 11 standard?

1090

Write a program which is required to process the time of a clock in hours and minutes, entered from the keyboard. With this program, there are two requirements for any data entered by a user: 1. The data must be of the correct type (in this case, two ints). 2. The data must be in the correct range: this means that, for the minutes, negative numbers and any number above 59 must be rejected; for the hours, negative numbers and any number above 23 must be rejected. Output error message for invalid data input. Output the time one and a half hour after the time input. i.e. Hour: 22 Min: 32 One and a half hour after 22:32 is 00:02

1957

Can create new c++ operators?

1030

why and when we can declar member fuction as a private in the class?

2076

For More Un-Answered { C++ } Questions Click Here