C++ interview questions part 40
C++ interview questions part 40
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Total Questions: 20
1. Which operator is having the right to left associativity in the following?
Correct Answer is : 5
2. Which operator is having the highest precedence?
Correct Answer is : Object pointer
3. What is this operator called ?:?
Correct Answer is : Design pattern
4. What is the output of this program?
#include using namespace std; int main() { int a; a = 5 + 3 * 5; cout << a; return 0; }
Correct Answer is : 12 21 31 32
5. What is the use of dynamic_cast operator?
Correct Answer is : 5 6 8 9 10
6. How many groups of output of operation are there in c++?
Correct Answer is : A technique of C++ that allows us to write inline functions without a name
7. Pick out the correct objects about the instantiation of output stream.
Correct Answer is : [capture clause](parameters) -> return_type { body of the function }
8. What is meant by ofstream in c++?
Correct Answer is : The return type of lambda expression can be neglected in some cases
9. How many types of output stream classes are there in c++?
Correct Answer is : 1
10. What must be specified when we construct an object of class ostream?
Correct Answer is : Error
11. Which of the following permits function overloading on c++?
Correct Answer is : Value of a: 10
12. In which of the following we cannot overload the function?
Correct Answer is : Error
13. Function overloading is also similar to which of the following?
Correct Answer is : memory heap
14. Overloaded functions are
Correct Answer is : All of the mentioned
15. What will happen while using pass by reference
Correct Answer is : use smart pointers & virtual destructor
16. What should be passed in parameters when function does not require any parameters?
Correct Answer is : Size of the heap memory is limited by the size of the RAM and the swap memory
17. What are the advantages of passing arguments by reference?
Correct Answer is : setrlimit()
18. What is meant by permutation in c++?
Correct Answer is : virtual memory
19. How the different permutations are ordered in c++?
Correct Answer is : pass by reference
20. Pick out the correct statement about permutation.
Correct Answer is : 3
