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

OOPS Interview Questions

Questions Answers Views Company eMail

Explain polymorphism? What r the types of polymorphism? pls give examples?

HCL,

4 16452

swapping program does not use third variable

TCS,

5 8564

how to find no of instances of an object in .NET?

Infosys,

1 5549

How Do you Code Composition and Aggregation in C++ ?

IBM, NET,

3 25463

Please tell me the oops concept with detailed answer

EEE,

9 17307

how to swap to variables without using thrid variable in java?

5 8446

what is the usage of clas templates

5 7421

Tell me the scenario,Where we can use interfaces or Abstract class.And What is the difference between interfaces and abstract class?

5 19881

i had specified the access specifier for abstarct class member like (pure virtual function) as private.But it can be accessed by the derived class.How the private member of one class is accessed by other class.if any body face this problem and found the solution plz reply to me.

Syntel,

1 4794

can you explain how to use JavaBean in Project

Infosys, Satyam,

3 6533

write a code for this. serial_number contained in the header of the file will be read , if this serial number is less than a previous serial number within a successfully processed file, or is the same as another serial number within a successfully processed file, or if the field contains anything other than 7 digits, then the file must error with the reason ‘Invalid SERIAL_NUMBER’.

Microsoft, TCS,

2256

write a code for this:trailer recordId contains a value other than 99, then the file must error with the reason ‘Invalid RECORD_ID’(User Defined Exception).

2154

sir i want to know which posting to apply since i am BE CSE.. also want to know what are the rounds there for my interview...Expecting for ur valuable answer....

2 4403

what is virtual destructor

L&T, TCS,

7 12815

Base class has two public data members. How can i derive a new class with one datamember as public and another data member as private?.

2 6303

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Un-Answered Questions { OOPS }

What are the 4 main oop principles?

1221

What is the example of polymorphism?

1123

write a C++ program for booking using constructor and destructor.

2542

What is the problem with multiple inheritance?

1165

What is the significance of classes in oop?

1149

i am getting an of the type can not convert int to int *. to overcome this problem what we should do?

2320

What are oops functions?

1016

write a program to enter a string like"sunil is a good boy and seeking for a job" not more than 10 characters including space in one line,rest characters should b in other line.if the next line starts from in between the previous word,then print whole word to next line.

2241

what is difference between class template and template class?

2658

What is difference between abstraction and encapsulation?

1075

What are objects in oop?

1101

#include #include #include #include void insert(char *items, int count); int main(void) { char s[255]; printf("Enter a string:"); gets(s); insert(s, strlen(s)); printf("The sorted string is: %s.\n", s); getch(); return 0; } void insert(char *items, int count) { register int a, b; char t; for(a=1; a < count; ++a) { t = items[a]; for(b=a-1; (b >= 0) && (t < items[b]); b--) items[b+1] = items[b]; items[b+1] = t; } } design an algorithm for Insertion Sort

2620

Why is abstraction needed?

1034

What is overriding in oop?

1036

How to call a non virtual function in the derived class by using base class pointer

6559

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