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eClinicalWorks Interview Questions and Answers
Q1. What are the technologies you know
I have knowledge of programming languages such as Java, Python, and C++. I am also familiar with web development technologies like HTML, CSS, and JavaScript.
Proficient in Java, Python, and C++ programming languages
Familiar with web development technologies like HTML, CSS, and JavaScript
Knowledge of database management systems like MySQL and Oracle
Experience with version control systems like Git
Understanding of software development methodologies like Agile and Waterfall
Q2. What programming language you know
I know multiple programming languages including Java, Python, and C++.
Java - used for building enterprise-level applications
Python - known for its simplicity and versatility
C++ - used for system programming and game development
Q3. What is a null pointer
A null pointer is a pointer that does not point to any memory location.
A null pointer is represented by the value 0 or NULL.
Dereferencing a null pointer results in a segmentation fault.
Null pointers are commonly used to indicate the end of a linked list or array.
Null pointers can be assigned to any pointer type.
Q4. What are classes in C++
Classes in C++ are user-defined data types that encapsulate data and functions.
Classes are used for object-oriented programming.
They allow for data abstraction and encapsulation.
Classes can have member variables and member functions.
Objects are instances of classes.
Inheritance and polymorphism are key features of classes.
Q5. What is a pointer
A pointer is a variable that stores the memory address of another variable.
Pointers allow direct manipulation of memory.
They are used to access and modify data indirectly.
Pointers are commonly used in dynamic memory allocation.
Example: int* ptr; // declares a pointer to an integer variable.
Q6. What are structures
Structures are user-defined data types that allow storing multiple data types under a single name.
Structures are used to group related data together.
They can contain variables of different data types.
Structures can also contain functions.
Structures are defined using the 'struct' keyword.
Example: struct student { char name[20]; int age; float marks; };
Structures can be passed as arguments to functions.
They can also be used to create linked lists and other data structures.
Q7. What is nested structure
A nested structure is a structure within another structure in programming.
It allows for more complex data structures to be created
It can be used in various programming languages such as C++, Java, and Python
An example of a nested structure is a struct within a struct in C++
Q8. What are classes
Classes are templates for creating objects that have similar properties and methods.
Classes are used in object-oriented programming.
They define the properties and methods that objects of that class will have.
Objects are instances of a class.
Classes can inherit properties and methods from other classes.
Examples of classes include 'Person', 'Car', and 'Animal'.
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