Object Oriented Programming interview questions part 18
Object Oriented Programming interview questions part 18
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Total Questions: 20
1. What is the sequence of destructors call?
Correct Answer is : Revere of the order of constructor call
2. The destructors _____________________
Correct Answer is : Can’t have any argument
3. Destructor calls ________________ (C++)
Correct Answer is : Can be implicit or explicit
4. Number of destructors called are
Correct Answer is : Always equal to number of constructors called
5. For explicit call _________________
Correct Answer is : The destructor must be public
6. If a class have 4 constructors then it must have 4 destructors also.
Correct Answer is : FALSE
7. Which among the following is true for destructors?
Correct Answer is : Destructors can’t be overloaded
8. The constructor _____________
Correct Answer is : Doesn’t have a return type
9. The destructors ____________
Correct Answer is : Doesn’t have a return type
10. The destructor can be called before the constructor if required. (True/False)
Correct Answer is : FALSE
11. What is extern variable?
Correct Answer is : Variables to be used that are declared in another source file
12. Which among the following is a correct statement for variables?
Correct Answer is : Variable can be declared many times
13. Which among the following is true for the variables?
Correct Answer is : Variable can be defined only once
14. To use extern variable _____________________
Correct Answer is : The source file must be included in the new file
15. What does a header file contain for an extern variable?
Correct Answer is : Only declaration of variables
16. Which condition is true if extern variable is used in a file?
Correct Answer is : Only one header file should declare it
17. Whenever a function is declared in a program _____________________
Correct Answer is : function is extern by default
18. Which of the following results in allocation of memory for the extern variables?
Correct Answer is : Definition
19. Which is the correct syntax for extern variable declaration?
Correct Answer is : extern data_type variable_name;
20. Which is the correct syntax for extern function declaration?
Correct Answer is : extern return_type function_name(argument_list);
