MarcoWagon Retail Interview Questions and Answers

Programming languages differ in syntax, features, and applications.

• Syntax: how code is written and structured

• Features: built-in functions, libraries, and capabilities

• Applications: what the language is commonly used for

• Examples: Java for enterprise applications, Python for data science, C++ for system programming

We used the Angular framework for our web application.

• We chose Angular because of its robustness and ease of use.

• It allowed us to create a single-page application with dynamic content.

• We also utilized Angular Material for UI components.

• We followed the MVC architecture pattern for our codebase.

I prefer the React framework because of its component-based architecture and efficient rendering.

• React's virtual DOM allows for faster rendering and updates compared to traditional DOM manipulation.

• The component-based architecture promotes reusability and modularity, making it easier to maintain and scale applications.

• React's large and active community provides a wealth of resources and support.

• Examples of popular applications built with React include Facebook, Instagram, and...read more

The keyword Static is used to declare a variable or method that belongs to the class and not to the instance of the class.

• Static variables are shared by all instances of the class.

• Static methods can be called without creating an instance of the class.

• Static variables and methods are accessed using the class name instead of the instance name.

• Static variables are initialized only once, at the start of the program.

• Examples of static methods include Math.max() and Arrays.sort().

Keyword Extern is used to declare a variable or function that is defined in another file.

• Extern keyword is used to tell the compiler that the variable or function is defined in another file.

• It is commonly used in header files to declare variables or functions that are defined in source files.

• Extern keyword is not used when defining the variable or function, only when declaring it.

• Example: extern int x; // declares variable x that is defined in another file

• Example: extern void...read more

Post-increment returns the value before incrementing, while pre-increment increments first and then returns the value.

• Post-increment: a++ returns the value of a and then increments it

• Pre-increment: ++a increments the value of a and then returns it