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C++/OOPS Interview Questions With Answers - Part XIX.

Here, are some sample questions based on "C++/OOPS Programming language". Read it carefully as these questions will help you in cracking any interview.

91) State conditions under which binary search is applicable.

For binary search,

  • The list must be sorted.
  • Lower bound and upper bound of the list must be known.

92) What is a linked list?

A linked list is a collection of data elements, called nodes pointing to the next nodes by means of pointers.

93) Differentiate between functions read() and write().

The read() function lest one read a unit of information from a file and the write() function lets one write a unit of information to a file.

94) What is a null pointer?

A pointer that does not point to any data object is called a null pointer, In C++, the null pointer can be represented by the constant 0.

95) What is a memory leak?

A situation in which there lie so many orphaned memory-blocks that are still allocated but no pointers are referencing to them, are referred to as a memory leak.


Frequently Asked C++/OOPS Interview Questions With Answers – 15.

Frequently Asked C++/OOPS Interview Questions With Answers – 16.

Frequently Asked C++/OOPS Interview Questions With Answers – 17.

Frequently Asked C++/OOPS Interview Questions With Answers – 18.

Frequently Asked C++/OOPS Interview Questions With Answers – 20.

… Back To C++/OOPS Interview QnA Index.


  1. Hi There,

    Great post. Well though out. This piece reminds me when I was starting out HR & Technical Interview Questions With Answers. - LG Soft after graduating from college.

    I am working LDPC encoding and decoding for mini project work. With my effort I have completed LDPC encoding but struggling with LDPC decoding. I need to complete this project complete this project within short period so please help me.

    I don`t know how to start decoding algorithm in C language but i do have algorithm. So, can anyone help me in writing C language for decoding procedure.

    Thank you very much and will look for more postings from you.

    Thank you,


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