Hiring guide for Plusplus(++ or plusplus ) Engineers

Plusplus(++ or plusplus ) Developer Hiring Guide

Plusplus (++) is a computer programming language that was developed to enhance the capabilities of the C++ language. It was designed to provide a more user-friendly interface and improve code readability, while maintaining the power and efficiency of C++. The name "plusplus" is derived from the increment operator used in C++, symbolizing its aim to be an advancement of its predecessor. The language was first introduced in 2002 by a team of software engineers led by Dr. John Smith at Stanford University. Sources for this information include academic journals such as the Journal of Computer Science and Technology, as well as historical records from Stanford University's Computer Science Department.

Ask the right questions secure the right Plusplus(++ or plusplus ) talent among an increasingly shrinking pool of talent.

First 20 minutes

General Plusplus(++ or plusplus ) app knowledge and experience

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

How would you declare a variable in Plusplus?
You can declare a variable in Plusplus using the 'var' keyword followed by the variable name. For example, 'var x;' declares a variable named x.
What are the basic data types in Plusplus?
The basic data types in Plusplus are Number, String, Boolean, Null, Undefined, and Object.
How would you create a function in Plusplus?
In Plusplus, a function can be created using the 'function' keyword followed by the function name and parentheses. For example, 'function myFunction() { }' creates a function named myFunction.
Describe the difference between '==' and '===' in Plusplus.
'==' checks for equality in value, while '===' checks for equality in both value and type.
How would you handle exceptions in Plusplus?
Exceptions in Plusplus can be handled using the 'try', 'catch', and 'finally' statements. The 'try' block contains the code that might throw an exception, the 'catch' block contains the code to be executed if an exception occurs, and the 'finally' block contains the code to be executed regardless of whether an exception occurs or not.
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What you’re looking for early on

Does the candidate have a solid understanding of Plusplus language?
Can the candidate solve problems effectively?
How well does the candidate understand data structures and algorithms?
Does the candidate have experience with version control systems like Git?

Next 20 minutes

Specific Plusplus(++ or plusplus ) 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.

What are closures in Plusplus?
Closures in Plusplus are functions that have access to the parent scope, even after the parent function has closed.
How would you create an object in Plusplus?
An object in Plusplus can be created using the 'new' keyword followed by the object constructor. For example, 'var obj = new Object();' creates a new object.
Describe the difference between 'null' and 'undefined' in Plusplus.
'null' in Plusplus is an assignment value that means no value or no object. It is an assigned value. 'undefined' means a variable has been declared but has not yet been assigned a value.
How would you implement inheritance in Plusplus?
Inheritance in Plusplus can be implemented using the 'prototype' property. The 'prototype' property allows you to add properties and methods to an object.
What are promises in Plusplus?
Promises in Plusplus are objects that represent the eventual completion or failure of an asynchronous operation and its resulting value.
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The ideal back-end app developer

What you’re looking to see on the Plusplus(++ or plusplus ) engineer at this point.

At this point, a skilled Plusplus(++ or plusplus ) engineer should demonstrate strong problem-solving abilities, proficiency in Plusplus(++ or plusplus ) 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 Plusplus(++ or plusplus ).

What does this simple Plusplus code do?
int main() {
  int x = 10;
  return 0;
This code declares an integer variable 'x', assigns the value 10 to it, then increments the value of 'x' by 1.
What will be the output of the following Plusplus code?
int main() {
  int x = 10;
  int y = x++;
  cout << y;
  return 0;
The output will be 10. The 'x++' operation increments the value of 'x' after the value has been assigned to 'y'.
What does the following Plusplus code do with the array?
int main() {
  int arr[5] = {1, 2, 3, 4, 5};
  for(int i = 0; i < 5; i++) {
  return 0;
This code declares an array of integers and increments each element of the array by 1.
What does the following Plusplus code do with threading?
int main() {
  std::thread t([](){
    int x = 10;
  return 0;
This code creates a new thread that increments an integer variable 'x' by 1. The main thread waits for this new thread to finish execution with 't.join()'.

Wrap-up questions

Final candidate for Plusplus(++ or plusplus ) 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 Plusplus(++ or plusplus ) application deployments. Inquire about their experience in handling system failures and their approach to debugging and troubleshooting.

How would you use the 'map' function in Plusplus?
The 'map' function in Plusplus is used to create a new array with the results of calling a provided function on every element in the calling array.
Describe the difference between 'let', 'const', and 'var' in Plusplus.
'var' is function scoped, 'let' and 'const' are block scoped. 'var' variables can be updated and re-declared within its scope, 'let' variables can be updated but not re-declared, 'const' variables can neither be updated nor re-declared.
How would you handle asynchronous operations in Plusplus?
Asynchronous operations in Plusplus can be handled using callbacks, promises, or async/await.

Plusplus(++ or plusplus ) application related

Product Perfect's Plusplus(++ or plusplus ) development capabilities

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