Bits casted

Understanding type casting and bit representation in C++

This is an easy practice question that tests your grasp of how C++ handles type conversions between different data types, particularly when casting involves changes to the underlying bit representation. It's the kind of question interviewers use to confirm you understand language fundamentals rather than just syntax.

To answer correctly, you need to think carefully about what happens to a value's bit pattern when it moves from one type to another—whether the compiler reinterprets the bits, extends or truncates them, or applies sign rules. The question rewards precision: knowing the difference between implicit and explicit casts, and understanding the rules the C++ standard defines for each conversion path.

• Implicit vs. explicit type conversions
• Bit patterns and how they change across type boundaries
• Sign extension and truncation
• How the compiler handles casting to narrower or wider types