Free Test Type conversion (impli... – C++ Lan...

Q1: What is implicit type conversion also called?

A. Type casting B. Type coercion C. Type overloading D. Type casting operator

Q2: Which keyword is used for explicit type conversion in C++?

A. cast B. convert C. static_cast D. explicit_cast

Q3: Which operator can be overloaded to define custom type conversion?

A. operator= B. operator cast C. operator type() D. operator convert()

Q4: Which type of conversion happens automatically by the compiler?

A. Explicit conversion B. Implicit conversion C. Forced conversion D. User-defined conversion

Q5: Which cast operator is safest for conversions?

A. reinterpret_cast B. const_cast C. static_cast D. dynamic_cast

Q6: What does explicit keyword before a constructor do?

A. Allows implicit conversions B. Prevents implicit conversions C. Converts types automatically D. Overloads operator=

Q7: Which cast is used to cast away constness?

A. static_cast B. const_cast C. reinterpret_cast D. dynamic_cast

Q8: Which cast is used for low-level reinterpretation of bit patterns?

A. reinterpret_cast B. static_cast C. dynamic_cast D. const_cast

Q9: What happens if you do not mark a constructor explicit?

A. It can be used for implicit conversions B. It causes compile error C. It disables operator overloading D. It becomes a destructor

Q10: What is user-defined conversion?

A. Conversion performed by compiler only B. Conversion defined by the programmer using operator type() C. Conversion using static_cast D. Conversion using C-style casts

Q11: Can implicit conversion lose data?

A. Never B. Yes, if narrowing conversion C. Only with explicit cast D. Only for built-in types

Q12: Which operator is used to convert an object to a built-in type?

A. operator type() B. operator= C. operator cast D. operator new

Q13: How do you prevent unwanted implicit conversions?

A. Mark constructors explicit B. Use static_cast C. Use reinterpret_cast D. Overload operator=

Q14: Which cast is used to safely cast polymorphic types?

A. dynamic_cast B. static_cast C. reinterpret_cast D. const_cast

Q15: What does a conversion operator return?

A. A pointer B. A reference C. A converted value of target type D. A function pointer

Q16: Which cast should be avoided due to unsafe behavior?