For the joining of two strings in string class, we may use “+” operator, can we use “-” operator the same way for subtracting strings?

• A) Yes
• B) No
• C) Yes along “+” operator only
• D) Yes along “:?” operator only

If class A is a friend of class B, and class B is a friend of class C. If class A wants class C to be a friend, __________________

• A) it has to declare , class A as a friend
• B) it has to declare, class C as a friend
• C) it has to declare, class B as a friend
• D) it has to declare, class B and class A as friend classes

Which of the following is a destination of cout stream?

• A) Constant
• B) Data type
• C) Variable
• D) Printer

Which statement is true about the following code in C++? int &j = i;

• A) The value of variable i is assigned to the variable j
• B) The address of variable i is assigned to the variable j
• C) j is a synonym of variable i
• D) The address of variable j is assigned to the variable i

Once an object is declared as a friend, _________________________.

• A) it has no access to data members of the class
• B) it has access to public members only
• C) it has access to protected data members only
• D) it has access to all non-public members as if they were public

The return type of the overloaded new operator must be?

• A) void (nothing)
• B) void pointer
• C) object pointer
• D) int pointer

The ws manipulator can be used with ______ stream(s).

• A) Input
• B) None of the given options
• C) Input/Output
• D) Output

In C language, the region of memory allocated at runtime is called _______________.

• A) available memory
• B) heap
• C) free store
• D) stack

Suppose we have a data member buf of our String class and we like to refer it in a member function of the same class, then choose which option is incorrect?

• A) (*this).buf
• B) this.(*buf)
• C) buf
• D) this -> buf

Which of the following syntax is best used to delete an array of 5 objects named ‘string’ allocated using new operator.

• A) delete []string ;
• B) delete string[5] ;
• C) delete string ;
• D) delete string[] ;

Overloaded member operator function is always called by _______

• A) Class
• B) Object
• C) Primitive data type
• D) Compiler

What is the sequence of event(s) when deallocating memory of an object using delete operator?

• A) Only block of memory is deallocated for object
• B) Memory is deallocated first before calling destructor
• C) Only destructor is called for object
• D) Destructor is called first before deallocating memory

What will be the output of the following code segment?
int n=8;
cout<<oct<<n;

• A) 11
• B) 1000
• C) 8
• D) 10

_______ operators are the ones that require only one operand to work.

• A) Binary
• B) Unit
• C) Single
• D) Unary

If operator function is non-member function then object on left side of operator cannot be_________?

• A) Built-in data type
• B) Object of different class
• C) Object of operator class
• D) Object of member function

Overloaded delete operator function takes parameter of void pointer and returns.

• A) void (nothing)
• B) object pointer
• C) void pointer
• D) int pointer

_____________ must be included to use stream manipulator in your code.

• A) conio.h
• B) iostream
• C) stdlib.h
• D) iomanip

*this is a pointer that always points to

• A) Current pointer of the class
• B) A Value of data member
• C) Current function of the class
• D) Current object of the class

The concept of ________________ allows us to separate the interface from the implementation of the class.

• A) encapsulation
• B) polymorphism
• C) inheritance
• D) pointers

In overloading the assignment (=) operator, which object(s) will call the operator function?

• A) Left object of the assignment operator
• B) No object will call the operator function
• C) Right object of the assignment operator
• D) Both objects will call the operator function