Product Perfect

Dinkumware C++ is a proprietary, commercial implementation of the C++ Standard Library. It is widely recognized for its strict adherence to the C++ standard and its high performance. Dinkumware C++ provides a comprehensive suite of libraries and tools that are essential for creating powerful and efficient C++ applications. It supports various platforms and compilers, making it a versatile choice for developers. The Dinkumware libraries are often included with popular compilers such as those from Microsoft, Intel, and others. The company behind this programming language is known for its commitment to keeping up-to-date with changes in the C++ standard, ensuring that developers using Dinkumware C++ have access to the latest language features.

Ask the right questions secure the right Dinkumware C++ talent among an increasingly shrinking pool of talent.

First 20 minutes

General Dinkumware C++ app knowledge and experience

The first 20 minutes of the interview should seek to understand the candidate's general background in Dinkumware C++ application development, including their experience with various programming languages, databases, and their approach to designing scalable and maintainable systems.

What are the basic principles of Object-Oriented Programming in C++?

The basic principles of Object-Oriented Programming in C++ are encapsulation, inheritance, polymorphism, and abstraction. Encapsulation is the process of combining data and functions into a single unit called class. Inheritance is a process by which one class acquires the properties and functionalities of another class. Polymorphism allows one interface to be used for a general class of actions. Abstraction is the process of hiding complex details and showing only the essentials.

How would you explain the concept of a class in C++?

A class in C++ is a user-defined data type that has data members and member functions. Data members are the data variables and member functions are the functions used to manipulate these variables. A class is like a blueprint for an object.

What is the difference between a class and a structure in C++?

The main difference between a class and a structure in C++ is the default access level. For a class, members are private by default, while for a structure, they are public. Otherwise, they are essentially the same.

How would you use the 'this' pointer in C++?

'This' pointer in C++ is used to refer to the current object of a class. It can be used to access the members of the current object, to pass the current object as a parameter to a method, and to declare index operators.

What are the different types of inheritance in C++?

The different types of inheritance in C++ are: single inheritance, multiple inheritance, hierarchical inheritance, multilevel inheritance, and hybrid inheritance.

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What you’re looking for early on

Does the candidate have a strong understanding of C++?

Has the candidate demonstrated problem-solving skills?

Is the candidate familiar with Dinkumware libraries?

Can the candidate work well in a team?

Next 20 minutes

Specific Dinkumware C++ development questions

The next 20 minutes of the interview should focus on the candidate's expertise with specific backend frameworks, their understanding of RESTful APIs, and their experience in handling data storage and retrieval efficiently.

Describe the difference between overloading and overriding in C++.

Overloading in C++ is when two or more methods in one class have the same method name but different parameters. Overriding means having two methods with the same method name and parameters, one is in the parent class and the other is in the child class.

How would you handle exceptions in C++?

Exceptions in C++ are handled using three keywords: try, catch, and throw. The 'try' block encloses the code that might throw an exception, the 'catch' block catches the exception and handles it, and the 'throw' keyword is used to throw exceptions.

What are the differences between new and malloc in C++?

New is an operator in C++ that is used to allocate memory for a variable or an array of variables of a given type, while malloc is a function in C that is used to allocate a block of memory on the heap. New initializes the allocated memory to zero, but malloc does not.

How would you implement polymorphism in C++?

Polymorphism in C++ can be implemented in two ways: compile-time polymorphism (also known as static binding or early binding) and runtime polymorphism (also known as dynamic binding or late binding). Compile-time polymorphism is achieved by function overloading and operator overloading. Runtime polymorphism is achieved by function overriding and virtual functions.

What is the difference between a virtual function and a pure virtual function in C++?

A virtual function in C++ has an implementation and provides the derived classes with the option of overriding it. A pure virtual function does not have an implementation and must be overridden by the derived classes.

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At this point, a skilled Dinkumware C++ engineer should demonstrate strong problem-solving abilities, proficiency in Dinkumware C++ programming language, and knowledge of software development methodologies. Red flags include lack of hands-on experience, inability to articulate complex concepts, or unfamiliarity with standard coding practices.

Digging deeper

Code questions

These will help you see the candidate's real-world development capabilities with Dinkumware C++.

What does the following C++ code do?
int main() {
  int a = 10;
  int b = 20;
  int c = a + b;
  return 0;
}
This code declares two integer variables 'a' and 'b', assigns them the values 10 and 20 respectively, adds these two numbers and assigns the result to the variable 'c'. The program does not output anything.
What will be the output of the following C++ code?
#include
int main() {
  for(int i=0; i<5; i++) {
    std::cout << i << ' ';
  }
  return 0;
}
The output of this code will be '0 1 2 3 4 '. It is a simple for loop that starts from 0 and runs until i is less than 5, printing the value of i in each iteration.
What does the following C++ code do?
#include
#include
int main() {
  std::vector v = {1, 2, 3, 4, 5};
  v.push_back(6);
  for(auto i : v) {
    std::cout << i << ' ';
  }
  return 0;
}
This code declares a vector 'v' and initializes it with the numbers 1 through 5. It then adds the number 6 to the end of the vector using the 'push_back' function. Finally, it prints all the elements of the vector.
What does the following C++ code do?
#include
void func() {
  std::cout << 'Hello, World!';
}
int main() {
  std::thread t(func);
  t.join();
  return 0;
}
This code creates a new thread 't' that runs the function 'func', which prints 'Hello, World!'. The 'join' function is used to ensure that the main function waits for the thread 't' to finish before it continues.

Wrap-up questions

Final candidate for Dinkumware C++ Developer role questions

The final few questions should evaluate the candidate's teamwork, communication, and problem-solving skills. Additionally, assess their knowledge of microservices architecture, serverless computing, and how they handle Dinkumware C++ application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

How would you use templates in C++?

Templates in C++ are used for generic programming. They allow us to create a function or a class that can work with any data type. The data type can be specified during the creation of objects or calling of functions.

What are the differences between a stack and a heap in C++?

A stack is used for static memory allocation and a heap for dynamic memory allocation. Variables allocated on the stack are stored directly to the memory and access to this memory is very fast. Variables allocated on the heap have their memory allocated at run time and accessing this memory is a bit slower.

How would you implement a singleton design pattern in C++?

A singleton design pattern in C++ can be implemented by making the constructor private in the class and creating a static method that creates the instance only if it doesn't already exist.

Dinkumware C++ application related

Product Perfect's Dinkumware C++ development capabilities

Beyond hiring for your Dinkumware C++ engineering team, you may be in the market for additional help. Product Perfect provides seasoned expertise in Dinkumware C++ projects, and can engage in multiple capacities.

Dinkumware C++ Consultive assessments

Dinkumware C++ Application Conversion Assessment Dinkumware C++ Application Integration Assessment Dinkumware C++ Data & Database Integration Assessment

Custom Dinkumware C++ development projects

Custom Dinkumware C++ App Conversion Dinkumware C++ Custom App Development Process App UI Design for Dinkumware C++ Facelifts

Hiring guide for Dinkumware C++ Engineers

Dinkumware C++ Developer Hiring Guide

What you’re looking for early on

The ideal back-end app developer

What you’re looking to see on the Dinkumware C++ engineer at this point.

Dinkumware C++ Consultive assessments

Custom Dinkumware C++ development projects