1.which of the following statements is correct? 1.change a reference changes the referent. 2.we can...

1.Which of the following statements is correct?

1.Change a reference changes the referent. 2.We can create an array of references.

A.Only 1 is correct.B.Only 2 is correct.C.Both 1 and 2 are correct.D.Both 1 and 2 are incorrect.

Answer: Option A

2.Which of the following statements is correct? 1.A reference is not a constant pointer. 2.A referenced is automatically de-referenced.

A. Only 1 is correct.B. Only 2 is correct.C. Both 1 and 2 are correct.D. Both 1 and 2 are incorrect.

Answer: Option B

A. different B. same

C. Virtual D. class

3.A union that has no constructor can be initialized with another union of __________ type.

Answer: Option B

4.ios::ate is used for

•A. Set the initial position at the start of the file•B. Set the last position at the end of the file•C. Set the initial position at the end of the file•D. Set the last position at the start of the file

•Answer: Option C

5.Which arithmetic operation can be done in pointer•A. Multiplication•B. Division•C. Addition•D. None of above

•Answer: Option C

6.Stack unwinding deals with•A. deals with polymorphism•B. deals with inheritance•C. deals with exception handing•D. deals with classes

•Answer: Option C

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#include < iostream.h >// empty class

class Sample{};

int main(){    Sample obj;    cout<< sizeof(Sample) <<","<< sizeof(obj);

    return 0;}

7.What will be the output of following program ?[what is the size of an object of an empty class?] 1.ERROR 1. 1,12.2,2 3. 3,34. 4,4 5. 0,0

Answer 1,1C++ allows to create object of an empty class, that will take some bytes of memory, and 1 is the minimum amount of memory. hence the class or object size of an empty class is 1.

8.class Sample{ int anyVar;};int main(){ Sample obj; obj.anyVar=10; cout<< "value is= "<< obj.anyVar; return 0;}

1.value is= 102.value is= 03.value is= Garbage_value4.ERROR

Answer ERROR: can not access private members declared in class'Sample'.in C++ class default class access modifier is private and you can not access the private members outside of it's class.

9. The correct statement for a function that takes pointer to a float, a pointer to a pointer to a char and returns a pointer to a pointer to a integer is

a) int **fun(float**, char**)b) int *fun(float*, char*)c) int ***fun(float*, char**)d) int ***fun(*float, **char)

Answer:c

10.What is the output of this program?• #include <iostream>• using namespace std;• int main()• {• char arr[20];• int i;• for(i = 0; i < 10; i++)• *(arr + i) = 65 + i;• *(arr + i) = '\0';• cout << arr;• return(0);• }a) ABCDEFGHIJ

b) AAAAAAAAAAc) JJJJJJJJd) none of the mentioned

Answer:a

A. Destructor of base class should always be static.

B. Destructor of base class should always be virtual.

C. Destructor of base class should not be virtual.

D. Destructor of base class should always be private.

11.Which of the following statement is correct regarding destructor of base class?

Answer: Option B

A. int Function(int Tmp = Show());

B.float Function(int Tmp = Show(int, float));

C. Both A and B.

D.float = Show(int, float) Function(Tmp);

Answer:Option A

12.Which of the following function prototype is perfectly acceptable?

A.A default argument is checked for type at the time of declaration and evaluated at the time of call.

B.We can provide a default value to a particular argument in the middle of an argument list.

C.We cannot provide a default value to a particular argument in the middle of an argument list.

D.Default arguments are useful in situations where some arguments always have the same value.

Answer:

Option B

13.Which of the following statement is incorrect?

A. housekeeping routineB. initializerC. ConstructorD. Compiler

Answer:Option C

14.If you design a class that needs special initialization tasks, you will want to design a(n) _____

A. the generic class nameB. the keyword templateC. the keyword classD. the template definition

Answer:Option A

15.The type to be used in an instantiation of a class template follows ________

A. []B. ->C. ?:D. *Answer: Option C

16.Which of the following operators cannot be overloaded?

A. It cannot have a destructor.B. It cannot have a constructor.

C. It is not allowed.

D. Both A and B.Answer: Option D

17.What will happen if a class is not having any name?

A.const int ShowData(void) { /* statements */ }

B.int const ShowData(void) { /* statements */ }

C.int ShowData(void) const { /* statements */ }

D. Both A and BAnswer: Option C

18.Which of the following is the correct way of declaring a function as constant?

A. Virtual polymorphismB. Transient polymorphismC. Ad-hoc polymorphismD. Pseudo polymorphism

Which of the following correctly describes overloading of functions?

Answer Option c

A. Top-down B. Bottom-upC. Right-left D. Left-right

20.Which of the following approach is adapted by C++?

:Answer Option B