TCS Senior Software Engineer Interview Questions and Answers for Experienced

String manipulation involves altering, formatting, or analyzing strings to achieve desired outcomes in programming.

• Concatenation: Combining two or more strings into one. Example: 'Hello' + ' World' results in 'Hello World'.

• Substring: Extracting a portion of a string. Example: 'Hello World'.substring(0, 5) returns 'Hello'.

• String Length: Finding the number of characters in a string. Example: 'Hello'.length returns 5...read more

Constructor and destructor are special member functions in a class that are used to initialize and destroy objects, respectively.

• Constructor is called when an object is created, used to initialize the object's data members.

• Destructor is called when an object goes out of scope or is explicitly deleted, used to release resources.

• Example: class Car { public: Car() { cout << 'Constructor called'; } ~Car() { cout << 'D...read more

OOP in C++ involves concepts like classes, inheritance, polymorphism, and encapsulation for better code organization.

• Classes: Define blueprints for objects. Example: class Car { public: void drive(); };

• Inheritance: Allows a class to inherit properties from another. Example: class ElectricCar : public Car {};

• Polymorphism: Enables methods to do different things based on the object. Example: virtual void start(); in ...read more

Regression testing is the process of retesting modified software to ensure that previously working functionalities are still intact.

• Regression testing is performed after making changes to software to identify any new defects or issues introduced.

• It helps ensure that existing functionalities are not affected by the changes.

• It involves rerunning previously executed test cases to verify if the software still behaves ...read more

State management libraries other than Redux

• MobX - simple and scalable state management

• Flux - unidirectional data flow architecture

• Vuex - state management for Vue.js

• Apollo Client - state management for GraphQL

• React Context API - built-in state management for React

• Recoil - experimental state management library for React

• XState - state management for finite state machines

State is mutable data owned by a component, while props are immutable data passed to a component.

• State can be changed by the component itself, while props cannot be changed by the component

• State is used to store data that can change over time, while props are used to pass data from parent to child components

• State is initialized in the constructor of a component, while props are passed down from the parent componen...read more