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5,469 c interview questions shared by candidates

Great variety of questions, mainly focusing on high performance techniques (low-level stuff). Topics included: 1) Atomic data structures 2) System internals (for example, system calls overheads) 3) Modern C++ features (variadic templates, etc.)
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Software Engineer (C++)

Interviewed at XTX Markets

4.5★
Mar 26, 2019

Great variety of questions, mainly focusing on high performance techniques (low-level stuff). Topics included: 1) Atomic data structures 2) System internals (for example, system calls overheads) 3) Modern C++ features (variadic templates, etc.)

The interview process consisted of a technical round focused on C/C++ fundamentals and problem-solving. It began with conceptual questions on C/C++ to test my understanding of language features. Then, I was given two DSA problems. The first was to detect a loop in a linked list, which I solved using Floyd’s Cycle Detection Algorithm. The second was to reverse the words in a string, where I explained and implemented an efficient in-place solution. I discussed my approach, wrote clean code, and analyzed the time and space complexity for both problems. The interviewer encouraged clarity of thought and problem-solving skills.

C/C++ Developer Interview

Interviewed at Aaptatt

4.1★
May 3, 2025

The interview process consisted of a technical round focused on C/C++ fundamentals and problem-solving. It began with conceptual questions on C/C++ to test my understanding of language features. Then, I was given two DSA problems. The first was to detect a loop in a linked list, which I solved using Floyd’s Cycle Detection Algorithm. The second was to reverse the words in a string, where I explained and implemented an efficient in-place solution. I discussed my approach, wrote clean code, and analyzed the time and space complexity for both problems. The interviewer encouraged clarity of thought and problem-solving skills.

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