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C++ and C Interview Questions & Answers

C++ Technical Interview Questions

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How do a pointer and an array differ in C?

An array is a contiguous sequence of elements with a defined array type, while a pointer is an object holding an address. In many expressions an array converts to a pointer to its first element, which...

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What is undefined behavior, and why is “it works on my machine” not enough?

Undefined behavior means the language imposes no requirements on the program’s behavior for that operation. Examples include accessing beyond an array, dereferencing an invalid pointer, and signed int...

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