McqMate
| 101. |
A private member function can be called by another function that is a member of a class is called |
| A. | Friend function |
| B. | Nesting of member function |
| C. | Inline function |
| D. | Static function |
| Answer» B. Nesting of member function | |
| 102. |
The function that is a bridge between two classes |
| A. | Friend function |
| B. | Nesting of member function |
| C. | Inline function |
| D. | Static function |
| Answer» A. Friend function | |
| 103. |
The break statement causes an exit |
| A. | from the innermost loop only. |
| B. | only from the innermost switch. |
| C. | from all loops & switches. |
| D. | from the innermost loop or switch. |
| Answer» C. from all loops & switches. | |
| 104. |
The arrays of variable that are of the type class |
| A. | Array of object |
| B. | pointer |
| C. | Object |
| D. | Structure |
| Answer» A. Array of object | |
| 105. |
Which of the following is not a type of constructor? |
| A. | Copy constructor |
| B. | Friend constructor |
| C. | Default constructor |
| D. | Parameterized construct |
| Answer» B. Friend constructor | |
| 106. |
Which of the following statements is incorrect? |
| A. | Friend keyword can be used in the class to allow access to another class. |
| B. | Friend keyword can be used for a function in the public section of a class. |
| C. | Friend keyword can be used for a function in the private section of a class. |
| D. | Friend keyword can be used on main(). |
| Answer» D. Friend keyword can be used on main(). | |
| 107. |
Which of the following statement is correct regarding destructor of base class? |
| 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. |
| Answer» B. Destructor of base class should always be virtual. | |
| 108. |
How can we make a class abstract? |
| A. | By making all member functions constant. |
| B. | By making at least one member function as pure virtual function. |
| C. | By declaring it abstract using the static keyword. |
| D. | By declaring it abstract using the virtual keyword. |
| Answer» B. By making at least one member function as pure virtual function. | |
| 109. |
Which of the following statements is correct when a class is inherited publicly? |
| A. | Public members of the base class become protected members of derived class. |
| B. | Public members of the base class become private members of derived class. |
| C. | Private members of the base class become protected members of derived class. |
| D. | Public members of the base class become public members of derived class. |
| Answer» D. Public members of the base class become public members of derived class. | |
| 110. |
Which of the following access specifies is used in a class definition by default? |
| A. | Protected |
| B. | Public |
| C. | Private |
| D. | Friend |
| Answer» C. Private | |
| 111. |
Which of the following statement is correct with respect to the use of friend keyword inside a class? |
| A. | A private data member can be declared as a friend. |
| B. | A class may be declared as a friend. |
| C. | An object may be declared as a friend. |
| D. | We can use friend keyword as a class name. |
| Answer» B. A class may be declared as a friend. | |
| 112. |
Which of the following keywords is used to control access to a class member? |
| A. | Default |
| B. | Break |
| C. | Protected |
| D. | Asm |
| Answer» C. Protected | |
| 113. |
Which of the following type of data member can be shared by all instances of its class? |
| A. | Public |
| B. | Inherited |
| C. | Static |
| D. | Friend |
| Answer» C. Static | |
| 114. |
Constructor is executed when _____. |
| A. | an object is created |
| B. | an object is used |
| C. | a class is declared |
| D. | an object goes out of scope. |
| Answer» A. an object is created | |
| 115. |
Which of the following also known as an instance of a class? |
| A. | Friend Functions |
| B. | Object |
| C. | Member Functions |
| D. | Member Variables |
| Answer» B. Object | |
| 116. |
How many objects can be created from an abstract class? |
| A. | Zero |
| B. | One |
| C. | Two |
| D. | As many as we want |
| Answer» A. Zero | |
| 117. |
Which of the following statements is correct? |
| A. | Data items in a class must be private. |
| B. | Both data and functions can be either private or public. |
| C. | Member functions of a class must be private. |
| D. | Constructor of a class cannot be private. |
| Answer» B. Both data and functions can be either private or public. | |
| 118. |
Which of the following can be overloaded? |
| A. | Object |
| B. | Functions |
| C. | Operators |
| D. | Both B and C |
| Answer» D. Both B and C | |
| 119. |
Which of the following is the only technical difference between structures and classes in C++? |
| A. | Member function and data are by default protected in structures but private in classes. |
| B. | Member function and data are by default private in structures but public in classes. |
| C. | Member function and data are by default public in structures but private in classes. |
| D. | Member function and data are by default public in structures but protected in classes. |
| Answer» C. Member function and data are by default public in structures but private in classes. | |
| 120. |
Which of the following statements are correct for a static member function? 1. It can access only other static members of its class. 2. It can be called using the class name, instead of objects. |
| 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» C. Both 1 and 2 are correct. | |
| 121. |
Which of the following means "The use of an object of one class in definition of another class"? |
| A. | Encapsulation |
| B. | Inheritance |
| C. | Composition |
| D. | Abstraction |
| Answer» C. Composition | |
| 122. |
Which of the following statements is correct when a class is inherited publicly? |
| A. | Public members of the base class become protected members of derived class. |
| B. | Public members of the base class become private members of derived class. |
| C. | Private members of the base class become protected members of derived class. |
| D. | Public members of the base class become public members of derived class |
| Answer» D. Public members of the base class become public members of derived class | |
| 123. |
Which of the following statements is correct about the constructors and destructors? |
| A. | Destructors can take arguments but constructors cannot. |
| B. | Constructors can take arguments but destructors cannot. |
| C. | Destructors can be overloaded but constructors cannot be overloaded. |
| D. | Constructors and destructors can both return a value. |
| Answer» B. Constructors can take arguments but destructors cannot. | |
| 124. |
Which of the following statement is correct? |
| A. | C++ enables to define functions that take constants as an argument. |
| B. | We cannot change the argument of the function that that are declared as constant. |
| C. | Both A and B. |
| D. | We cannot use the constant while defining the function. |
| Answer» C. Both A and B. | |
| 125. |
Which of the following statement is correct? |
| A. | Two functions having same number of argument, order and type of argument can be overloaded if both functions do not have any default argument. |
| B. | Overloaded function must have default arguments. |
| C. | Overloaded function must have default arguments starting from the left of argument list. |
| D. | A function can be overloaded more than once. |
| Answer» D. A function can be overloaded more than once. | |
| 126. |
Which of the following statement will be correct if the function has three arguments passed to it? |
| A. | The trailing argument will be the default argument. |
| B. | The first argument will be the default argument. |
| C. | The middle argument will be the default argument. |
| D. | All the argument will be the default argument. |
| Answer» A. The trailing argument will be the default argument. | |
| 127. |
Which of the following statement is incorrect? |
| A. | Default arguments can be provided for pointers to functions. |
| B. | A function can have all its arguments as default. |
| C. | Default argument cannot be provided for pointers to functions. |
| D. | A default argument cannot be redefined in later declaration. |
| Answer» C. Default argument cannot be provided for pointers to functions. | |
| 128. |
Which of the following statement is correct? |
| A. | Constructors can have default parameters. |
| B. | Constructors cannot have default parameters. |
| C. | Constructors cannot have more than one default parameter. |
| D. | Constructors can have at most five default parameters. |
| Answer» A. Constructors can have default parameters. | |
| 129. |
Which of the following function / type of function cannot be overloaded? |
| A. | Member function |
| B. | Static function |
| C. | Virtual function |
| D. | Both B and C |
| Answer» C. Virtual function | |
| 130. |
Which of the following statement is incorrect? |
| A. | The default value for an argument can be a global constant. |
| B. | The default arguments are given in the function prototype. |
| C. | Compiler uses the prototype information to build a call, not the function definition. |
| D. | The default arguments are given in the function prototype and should be repeated in the function definition. |
| Answer» D. The default arguments are given in the function prototype and should be repeated in the function definition. | |
| 131. |
Where the default value of parameter have to be specified? |
| A. | Function call |
| B. | Function definition |
| C. | Function prototype |
| D. | Both B or C |
| Answer» C. Function prototype | |
| 132. |
Which of the following statement is correct? |
| A. | The default value for an argument cannot be function call. |
| B. | C++ allows the redefinition of a default parameter. |
| C. | Both A and B. |
| D. | C++ does not allow the redefinition of a default parameter. |
| Answer» D. C++ does not allow the redefinition of a default parameter. | |
| 133. |
Which of the following statement is correct? |
| A. | Only one parameter of a function can be a default parameter. |
| B. | Minimum one parameter of a function must be a default parameter. |
| C. | All the parameters of a function can be default parameters. |
| D. | No parameter of a function can be default. |
| Answer» C. All the parameters of a function can be default parameters. | |
| 134. |
Which of the following function / types of function cannot have default parameters? |
| A. | Member function of class |
| B. | main() |
| C. | Member function of structure |
| D. | Both B and C |
| Answer» B. main() | |
| 135. |
A constructor that accepts __________ parameters is called the default constructor. |
| A. | one |
| B. | two |
| C. | no |
| D. | three |
| Answer» C. no | |
| 136. |
What happens when a class with parameterized constructors and having no default constructor is used in a program and we create an object that needs a zero‐argument constructor? |
| A. | Compile‐time error. |
| B. | Preprocessing error. |
| C. | Runtime error. |
| D. | Runtime exception. |
| Answer» A. Compile‐time error. | |
| 137. |
Destructor has the same name as the constructor and it is preceded by ______ . |
| A. | ! |
| B. | ? |
| C. | ~ |
| D. | $ |
| Answer» C. ~ | |
| 138. |
For automatic objects, constructors and destructors are called each time the objects |
| A. | enter and leave scope |
| B. | inherit parent class |
| C. | are constructed |
| D. | are destroyed |
| Answer» A. enter and leave scope | |
| 139. |
Which constructor function is designed to copy objects of the same class type? |
| A. | Create constructor |
| B. | Object constructor |
| C. | Dynamic constructor |
| D. | Copy constructor |
| Answer» D. Copy constructor | |
| 140. |
Which of the following statement is correct? |
| A. | Constructor has the same name as that of the class. |
| B. | Destructor has the same name as that of the class with a tilde symbol at the beginning. |
| C. | Both A and B. |
| D. | Destructor has the same name as the first member function of the class. |
| Answer» C. Both A and B. | |
| 141. |
When are the Global objects destroyed? |
| A. | When the control comes out of the block in which they are being used. |
| B. | When the program terminates. |
| C. | When the control comes out of the function in which they are being used. |
| D. | As soon as local objects die. |
| Answer» B. When the program terminates. | |
| 142. |
Copy constructor must receive its arguments by __________ . |
| A. | either pass‐by‐value or pass‐by‐reference |
| B. | only pass‐by‐value |
| C. | only pass‐by‐reference |
| D. | only pass by address |
| Answer» C. only pass‐by‐reference | |
| 143. |
A function with the same name as the class, but preceded with a tilde character (~) is called __________ of that class. |
| A. | constructor |
| B. | destructor |
| C. | function |
| D. | object |
| Answer» B. destructor | |
| 144. |
Which of the following gets called when an object goes out of scope? |
| A. | constructor |
| B. | destructor |
| C. | main |
| D. | virtual function |
| Answer» B. destructor | |
| 145. |
_________ used to make a copy of one class object from another class object of the same class type. |
| A. | constructor |
| B. | copy constructor |
| C. | destructor |
| D. | default constructor |
| Answer» B. copy constructor | |
| 146. |
Constructors __________ to allow different approaches of object construction. |
| A. | cannot overloaded |
| B. | can be overloaded |
| C. | can be called |
| D. | can be nested |
| Answer» B. can be overloaded | |
| 147. |
Which of the following cannot be declared as virtual? |
| A. | Constructor |
| B. | Destructor |
| C. | Data Members |
| D. | Both A and C |
| Answer» A. Constructor | |
| 148. |
If the copy constructor receives its arguments by value, the copy constructor would |
| A. | call one‐argument constructor of the class |
| B. | work without any problem |
| C. | call itself recursively |
| D. | call zero‐argument constructor |
| Answer» C. call itself recursively | |
| 149. |
Which of the following are NOT provided by the compiler by default? |
| A. | Zero‐argument Constructor |
| B. | Destructor |
| C. | Copy Constructor |
| D. | Copy Destructor |
| Answer» D. Copy Destructor | |
| 150. |
It is a __________ error to pass arguments to a destructor. |
| A. | logical |
| B. | virtual |
| C. | syntax |
| D. | linker |
| Answer» C. syntax | |
| 151. |
A __________ is a constructor that either has no parameters, or if it has parameters, all the parameters have default values. |
| A. | default constructor |
| B. | copy constructor |
| C. | Both A and B |
| D. | None of these |
| Answer» A. default constructor | |
| 152. |
How many default constructors per class are possible? |
| A. | Only one |
| B. | Two |
| C. | Three |
| D. | Unlimited |
| Answer» A. Only one | |
| 153. |
Which of the following statement is correct? |
| A. | A constructor has the same name as the class in which it is present. |
| B. | A constructor has a different name than the class in which it is present. |
| C. | A constructor always returns an integer. |
| D. | A constructor cannot be overloaded. |
| Answer» A. A constructor has the same name as the class in which it is present. | |
| 154. |
A destructor takes __________ arguments. |
| A. | one |
| B. | two |
| C. | three |
| D. | no |
| Answer» D. no | |
| 155. |
Destructor calls are made in which order of the corresponding constructor calls? |
| A. | Reverse order |
| B. | Forward order |
| C. | Depends on how the object is constructed |
| D. | Depends on how many objects are constructed |
| Answer» A. Reverse order | |
| 156. |
Which of the following never requires any arguments? |
| A. | Member function |
| B. | Friend function |
| C. | Default constructor |
| D. | const function |
| Answer» C. Default constructor | |
| 157. |
A class's __________ is called when an object is destroyed. |
| A. | constructor |
| B. | destructor |
| C. | assignment function |
| D. | copy constructor |
| Answer» B. destructor | |
| 158. |
How many times a constructor is called in the life‐time of an object? |
| A. | Only once |
| B. | Twice |
| C. | Thrice |
| D. | Depends on the way of creation of object |
| Answer» A. Only once | |
| 159. |
To ensure that every object in the array receives a destructor call, always delete memory allocated as an array with operator __________ . |
| A. | destructor |
| B. | New[] |
| C. | delete[] |
| D. | Free() |
| Answer» C. delete[] | |
| 160. |
Which of the following statement is correct whenever an object goes out of scope? |
| A. | The default constructor of the object is called. |
| B. | The parameterized destructor is called. |
| C. | The default destructor of the object is called. |
| D. | None of the above. |
| Answer» C. The default destructor of the object is called. | |
| 161. |
Which allows you to create a derived class that inherits properties from more than one base class? |
| A. | Multilevel inheritance |
| B. | Multiple inheritance |
| C. | Hybrid Inheritance |
| D. | Hierarchical Inheritanc |
| Answer» B. Multiple inheritance | |
| 162. |
Which feature in OOP allows reusing code? |
| A. | Polymorphism |
| B. | Inheritance |
| C. | Encapsulation |
| D. | Data hiding |
| Answer» B. Inheritance | |
| 163. |
The mechanism of deriving a new class from another class |
| A. | Polymorphism |
| B. | Inheritance |
| C. | Encapsulation |
| D. | Data hiding |
| Answer» B. Inheritance | |
| 164. |
A derived class with only one base class |
| A. | Multilevel inheritance |
| B. | Multiple inheritance |
| C. | Single inheritance |
| D. | Hierarchical Inheritance |
| Answer» C. Single inheritance | |
| 165. |
The mechanism of deriving one base class with more than one derived classes |
| A. | Multilevel inheritance |
| B. | Multiple inheritance |
| C. | Hybrid Inheritance |
| D. | Hierarchical Inheritance |
| Answer» D. Hierarchical Inheritance | |
| 166. |
The duplication of inherited members due to the multiple paths can be avoided by making a common base class is called |
| A. | Abstract class |
| B. | Virtual base class |
| C. | Multiple inheritance |
| D. | Nesting of classes |
| Answer» B. Virtual base class | |
| 167. |
The class that is not used to create object |
| A. | Abstract class |
| B. | Virtual base class |
| C. | Multiple inheritance |
| D. | Nesting of classes |
| Answer» A. Abstract class | |
| 168. |
The mechanism of giving special meaning to an operator |
| A. | Operator overloading |
| B. | Function overloading |
| C. | Constructor overloading |
| D. | Virtual function |
| Answer» A. Operator overloading | |
| 169. |
The operators can’t be overloaded |
| A. | Binary operators |
| B. | Unary operators |
| C. | Ternary operator |
| D. | None |
| Answer» C. Ternary operator | |
| 170. |
Which of the following is not correct |
| A. | Only existing operator can be overloaded |
| B. | The overloaded operator must have at least one operand |
| C. | We can change the basic meaning of the operator |
| D. | Overloaded operators follow the syntax rule of original operator |
| Answer» C. We can change the basic meaning of the operator | |
| 171. |
The operator we cannot use friend function |
| A. | ? |
| B. | Sizeof |
| C. | :: |
| D. | [] |
| Answer» D. [] | |
| 172. |
A friend function for unary operator overloading takes ‐‐‐‐ ‐arguments. |
| A. | Zero |
| B. | One |
| C. | Two |
| D. | None |
| Answer» B. One | |
| 173. |
A member function for unary operator overloading takes‐‐‐‐ ‐arguments. |
| A. | Zero |
| B. | One |
| C. | Two |
| D. | None |
| Answer» A. Zero | |
| 174. |
A friend function for binary operator overloading takes‐‐‐‐ ‐arguments. |
| A. | Zero |
| B. | One |
| C. | Two |
| D. | None |
| Answer» C. Two | |
| 175. |
The variable that contains the address of constant or variable |
| A. | Function |
| B. | Array |
| C. | pointer |
| D. | structure |
| Answer» C. pointer | |
| 176. |
The indirect operator is |
| A. | & |
| B. | * |
| C. | :: |
| D. | :? |
| Answer» B. * | |
| 177. |
The memory management operator in c++ |
| A. | new &delete |
| B. | malloc |
| C. | calloc |
| D. | free |
| Answer» A. new &delete | |
| 178. |
The pointer refers to an object that has called the member function currently |
| A. | this |
| B. | address |
| C. | virtual function |
| D. | none |
| Answer» A. this | |
| 179. |
Conversion of data type is called |
| A. | self referencing |
| B. | type casting |
| C. | virtual function |
| D. | abstract class |
| Answer» B. type casting | |
| 180. |
The function that act as an interface to base & derived class |
| A. | function overloading |
| B. | virtual function |
| C. | constructor |
| D. | friend |
| Answer» B. virtual function | |
| 181. |
The keyword to convert constant into variable |
| A. | Const_cast |
| B. | reinterpret_cast |
| C. | static_cast |
| D. | implicit |
| Answer» A. Const_cast | |
| 182. |
The keyword to convert pointer into non pointer & non pointer into pointer |
| A. | Const_cast |
| B. | reinterpret_cast |
| C. | static_cast |
| D. | implicit |
| Answer» B. reinterpret_cast | |
| 183. |
Treating the address of the object of the derived class as the address of the base class means |
| A. | Up casting |
| B. | down casting |
| C. | early binding |
| D. | late binding |
| Answer» A. Up casting | |
| 184. |
The empty virtual function are called |
| A. | pure /donothing |
| B. | virtual table |
| C. | polymorphism |
| D. | virtual base class |
| Answer» A. pure /donothing | |
| 185. |
A stream of byte that is the interface between IO and IO devices |
| A. | Streams |
| B. | class |
| C. | object |
| D. | file |
| Answer» A. Streams | |
| 186. |
The class that derived from standard library ios contain input functions |
| A. | Ios |
| B. | iostream |
| C. | istream |
| D. | ostream |
| Answer» C. istream | |
| 187. |
The class that derived from standard library ios contain output functions |
| A. | Ios |
| B. | iostream |
| C. | istream |
| D. | ostream |
| Answer» D. ostream | |
| 188. |
Which function is in the ostream class |
| A. | get() |
| B. | read() |
| C. | write |
| D. | cin |
| Answer» C. write | |
| 189. |
Which function is in the istream class |
| A. | get() |
| B. | put() |
| C. | write |
| D. | cout |
| Answer» A. get() | |
| 190. |
The standard library inherited from istream & ostream |
| A. | Ios |
| B. | iostream |
| C. | ifstream |
| D. | ofstream |
| Answer» B. iostream | |
| 191. |
The function used to receive one character at a time |
| A. | get() |
| B. | put() |
| C. | getline() |
| D. | write() |
| Answer» A. get() | |
| 192. |
The function used to disply one character at a time |
| A. | get() |
| B. | put() |
| C. | getline() |
| D. | write() |
| Answer» B. put() | |
| 193. |
The function used to receive one line at a time |
| A. | get() |
| B. | put() |
| C. | getline() |
| D. | write() |
| Answer» C. getline() | |
| 194. |
The function used to display one line at a time |
| A. | get() |
| B. | put() |
| C. | getline() |
| D. | write() |
| Answer» D. write() | |
| 195. |
The function contain in the ios class to set width |
| A. | width() |
| B. | precision() |
| C. | fill() |
| D. | setf() |
| Answer» A. width() | |
| 196. |
The function contain in the class iomanip to set width |
| A. | setw() |
| B. | set precision() |
| C. | set fill() |
| D. | setiosflags() |
| Answer» A. setw() | |
| 197. |
The function contain in the class iomanip to fill characters in the un used space |
| A. | setw() |
| B. | set precision() |
| C. | set fill() |
| D. | setiosflags() |
| Answer» C. set fill() | |
| 198. |
The function contain in the ios class to fill characters in the blank space |
| A. | width() |
| B. | precision() |
| C. | fill() |
| D. | setf() |
| Answer» C. fill() | |
| 199. |
The function contain in the ios class to specify number of decimal places |
| A. | width() |
| B. | precision() |
| C. | fill() |
| D. | setf() |
| Answer» B. precision() | |
| 200. |
The function contain in the ios class to set flags |
| A. | width() |
| B. | precision() |
| C. | fill() |
| D. | setf() |
| Answer» D. setf() | |
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