McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Computer Applications (BCA) , Programming Languages .
| 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() | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.