What are the key differences between C and C++?
A classic computer science question testing understanding of procedural vs. object-oriented paradigms and memory management.
Why Interviewers Ask This
Understanding the evolution from C to C++ is crucial for grasping modern software engineering. It checks if the candidate understands encapsulation, polymorphism, and how C++ extends C with classes and templates.
How to Answer This Question
Highlight that C is procedural while C++ is multi-paradigm including OOP. Mention support for classes, inheritance, and function overloading in C++. Discuss memory management differences, noting C++ allows RAII. Keep the explanation concise and focused on architectural differences.
Key Points to Cover
- Procedural vs OOP
- Classes and objects
- Memory management styles
- Templates and overloading
Sample Answer
C is a procedural language focusing on functions and structures, while C++ adds object-oriented features like classes, inheritance, and polymorphism. C++ supports operator overloading and templates, allowing generic prog…
Common Mistakes to Avoid
- Thinking C++ is just C with classes
- Missing template discussion
- Confusing compilation models
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