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

OOPS Interview Questions

Questions Answers Views Company eMail

What is interface? When and where is it used?

2165

What is virtual function?where and when is it used?

Sitel,

2 5661

What is debug class?what is trace class? What differences are between them? With examples.

2190

How many types of access specifier in c# and vb.net?

Infosys,

1 5321

Hi All, I am new to programming and want to know how can i write a code to take input of 2 numbers from user and swap it without using a temp variable?

NIIT,

2 4529

How can i write a code in c# to take a number from the user and then find all the prime numbers till the number entered by the user.

NIIT, TCS,

4 7522

hi all..i want to know oops concepts clearly can any1 explain??

Eureka Forbes,

2125

c++ is a pure object oriented programming or not?

Wipro,

5 6928

why we are declare the function in the abstract class even though we are declaring it in Derived class?

TCS,

1 3981

Write a C++ program without using any loop (if, for, while etc) to print prime numbers from 1 to 100 and 100 to 1 (Do not use 200 print statements!!!)

HCL,

2102

which structured data type is not used in c++? 1.union 2.structure 3.string 4.boolean

HCL, Wipro,

2 6059

Write a program to reverse a string using recursive function?

TCS,

2339

Write a program to implement OOPS concepts such as inheritance, polymorphism, friend function, operator overloading?

TCS,

4744

c++ provides classes...and classes do what we want but why then strcut are used...if we say data hiding... it is also provided by c++ in structs then why to prefer clasess

HCL, TCS,

1 4806

Is this job good for future? can do this job post grduate student?

2164

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Un-Answered Questions { OOPS }

What is meant by multiple inheritance?

1246

What is meant by oops concept?

1038

#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

2617

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

2544

What are the data types in oop?

1096

What are the types of abstraction?

1072

what is graphics

2446

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).

2151

what is different between oops and c++

2538

What is an interface in oop?

1042

What is multilevel inheritance explain with example?

1144

What is class and object with example?

1130

What is encapsulation in ict?

1058

Why is oop useful?

1101

What do you mean by abstraction?

1068

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