Larsen & Toubro interview questions and answers

61 Articles

Finding all substrings of a given number that are divisible by 11

July 12, 2021

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July 12, 2021

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Answer : Query(l, r) : find if the sub-string between the indices l and r….

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What is the best way to sort an array of 0s and 1s ?

July 12, 2021

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July 12, 2021

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Answer : Sort an array elements means arrange…

C++

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Find Largest number from set of given numbers ?

July 12, 2021

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July 12, 2021

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Answer : Find number of digits in the largest number. Let us assume number of digits be n…

C++

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The operator when overloaded in a class ?

July 12, 2021

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July 12, 2021

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Answer : B. Ad-hoc polymorphism

C++

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Syntax for Pure Virtual Function is ?

July 12, 2021

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July 12, 2021

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Answer : D. void virtual show()=0

C++

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Find the wrong statement about Abstract Class ?

July 12, 2021

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July 12, 2021

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Answer : B. We can’t create pointers to an abstract class

C++

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C++ supports run time polymorphism with the help of virtual functions, which is called ______ binding

July 12, 2021

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Answer : A. Dynamic

C++

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A virtual function that has no definition within the base class is called ?

July 12, 2021

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July 12, 2021

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Answer : A. Pure virtual function

C++

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Which of the following statements about virtual base classes is correct ?

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Answer : B. It is used to avoid multiple copies of base class in derived class.

C++

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Which of the following concepts means wrapping up of data and functions together ?

July 12, 2021

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Answer : B. Encapsulation

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Which of the following can access private data members or member functions of a class ?

July 12, 2021

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Answer : C. Any member function of that class.

C++

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Which of the following access specifiers is used in a class definition by default ?

July 12, 2021

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Answer : C. Private

C++

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What is pure virtual function in C++ ?

July 12, 2021

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July 12, 2021

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Answer : A virtual function will become pure virtual function…

C++

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State whether the following statements about inheritance are True or False.

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Answer : C. True, True

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In c++ how are protected members of a base class accessed in derived class when inherited privately ?

July 12, 2021

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Answer : A. Privately

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Encapsulation is ?

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July 12, 2021

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Answer : C. Reduce Complexity

C++

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Which of the following concepts of OOPS means exposing only necessary information to client ?

July 12, 2021

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Answer : C. Data Hiding

C++

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Write a function that takes an integer array as an input and find the largest number in the array. You cannot sort array or use any API or searching needs ?

July 12, 2021

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July 12, 2021

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Answer : #include…

C++

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Given a list of numbers ( fixed list) Now given any other list, how can you efficiently find out if there is any element in the second list that is an element of the first list (fixed list) ?

July 12, 2021

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July 12, 2021

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Answer : In this method, we store all elements of second array in a hash table….

C++

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What are the advantages and disadvantages of using inline and const ?

July 12, 2021

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July 12, 2021

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Answers : Advantages of inline….

C++

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Larsen & Toubro interview questions and answers

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