10+ Interview Questions and Answers

C is a procedural programming language while C++ is a multi-paradigm programming language with object-oriented features.

• C is a procedural programming language while C++ supports both procedural and object-oriented programming.

• C does not have classes and objects like C++.

• C++ has features like inheritance, polymorphism, and encapsulation which are not present in C.

• C++ allows function overloading and operator overloading which are not supported in C.

• C++ has a richer standard lib...read more

Type casting is changing the data type of a variable, while type conversion is converting a value from one data type to another.

• Type casting is done explicitly by the programmer, while type conversion can be done implicitly by the compiler.

• Type casting can lead to loss of data if the new data type cannot hold the original value, while type conversion may involve data loss depending on the conversion.

• Example of type casting: int x = (int) 3.14;

• Example of type conversion: int y...read more

The function used to change a string to an integer is parseInt() in JavaScript.

• parseInt() function is used to convert a string to an integer in JavaScript.

• It takes in the string as an argument and returns the integer value.

• Example: parseInt('10') will return 10.

Use SQL query with MAX() function to find the maximum salary of an employee from a table.

• Use SELECT MAX(salary) FROM employees;

• Make sure to replace 'employees' with the actual table name where employee salaries are stored.

No, a C program cannot run without a main function.

• The main function is the entry point of a C program, without it the program cannot be executed.

• The main function is mandatory in C programming as it tells the compiler where to start the execution of the program.

• Attempting to compile a C program without a main function will result in a compilation error.

Types of Exceptions include checked, unchecked, and errors.

• Checked Exceptions: Must be either caught or declared in the method signature. Example: IOException

• Unchecked Exceptions: Not required to be caught or declared. Example: NullPointerException

• Errors: Irrecoverable issues that should not be caught or handled. Example: OutOfMemoryError

Some object oriented programming languages include Java, C++, Python, and C#.

• Java

• C++

• Python

• C#

Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is redefining a method in a subclass with the same signature as in the superclass.

• Method overloading allows multiple methods with the same name but different parameters in the same class.

• Method overriding involves redefining a method in a subclass with the same signature as in the superclass.

• Example of method overloading: void print(int num) and void ...read more

Agile is a software development methodology that emphasizes flexibility, collaboration, and iterative development.

• Agile focuses on delivering working software in short iterations

• It values customer collaboration and responding to change over following a strict plan

• Agile teams work closely together and adapt to changing requirements

• Popular Agile frameworks include Scrum, Kanban, and Extreme Programming (XP)

Lifecycle components of threads include creation, scheduling, execution, and termination.

• Creation: Threads are created using the 'Thread' class in Java or 'pthread_create' function in C.

• Scheduling: Threads are scheduled by the operating system based on priority and other factors.

• Execution: Threads execute the code specified in their run method or function.

• Termination: Threads can terminate either by completing their task or by being explicitly stopped.

Types of testing include unit testing, integration testing, system testing, and acceptance testing.

• Unit testing focuses on testing individual components or modules of a system.

• Integration testing involves testing how different components work together.

• System testing tests the entire system as a whole.

• Acceptance testing is done to ensure the system meets the requirements of the end users.

I am open to relocation for the right opportunity.

• I am willing to relocate for the job if necessary.

• I am flexible and open to new experiences in different locations.

• I have relocated in the past for internships or other opportunities.

• I understand the importance of being geographically mobile in the engineering field.