CDW Software Engineer Interview Questions and Answers

All multiple choices consisting of code output based questions and logical reasoning

Q1. All about project
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Q2. Explain in detail about your project
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Q1. C++ Opps in detailed STL Normal Data structures like linked list tree normal 1 question from linked list detect cycle Opps question overload [] operator Virtual function Templates Pointers
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Q2. Few questions from operating systems
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Q3. I didn’t answered the operating system questions properly but they were satisfied from my c++ and Dsa part.
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Q1. Discussion over old projects worked on Your idea’s Agile methodology
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Q1. What is the code to reverse a string without reversing its words in C++?
Ans. 
This code reverses the characters of a string while keeping the order of words intact in C++.
• Split the string into words using a space as a delimiter.

• Reverse the entire string to get the characters in reverse order.

• Reverse each individual word to restore their original order.

• Example: Input: 'Hello World' -> Output: 'dlroW olleH'
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Q2. What is the code implementation for deep copy and shallow copy in programming?
Ans. 
Deep copy creates a new object with copies of nested objects; shallow copy copies references to nested objects.
• Shallow Copy: Copies the object's reference, not the actual object. Example: `list2 = list1.copy()`.

• Deep Copy: Creates a new object and recursively copies all objects found in the original. Example: `import copy; list2 = copy.deepcopy(list1)`.

• Shallow Copy is faster but can lead to unintended side effects if th...read more
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Q3. What SQL query can be used to return results where the age is greater than 2?
Ans. 
Use a SQL query to filter records where age is greater than 2.
• Basic SQL syntax: SELECT column_name FROM table_name WHERE condition;

• Example query: SELECT * FROM users WHERE age > 2;

• This query retrieves all records from the 'users' table where the age column has values greater than 2.

• Ensure the 'age' column is of a numeric type to avoid errors.
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