C/C++ MCQ - Check your skill set

C / C++ Interview MCQ Test

1. Which keyword prevents a variable from being modified?

static volatile const register

2. Which operator is used to allocate memory dynamically in C++?

malloc alloc new create

3. Which feature supports runtime polymorphism?

Templates Overloading Virtual functions Macros

4. What is sizeof(char)?

2 4 1 Compiler dependent

5. Which container allows fast random access?

list map vector set

6. What is a dangling pointer?

Pointer not initialized Pointer pointing to freed memory Pointer to pointer Constant pointer

7. Which function frees memory allocated by malloc?

delete remove free clear

8. Which keyword is used to inherit a class?

inherits extends public using

9. Which is NOT a C++ access specifier?

private protected public internal

10. What does STL stand for?

Standard Type Library System Template Library Standard Template Library Static Template Library

11. Which loop executes at least once?

for while do-while foreach

12. Which pointer manages memory automatically?

raw pointer smart pointer void pointer null pointer

13. What is RAII?

Runtime API Interface Resource Acquisition Is Initialization Random Access Initialization Resource Allocation In Interface

14. Which keyword avoids compiler optimization?

static const volatile extern

15. What is the output of sizeof(int)?

2 4 Depends on compiler Always 8