MCQOPTIONS
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MCQOPTIONS
This section includes 916 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 201. |
Which language among the following doesn’t allow pointers? |
| A. | C++ |
| B. | Java |
| C. | Pascal |
| D. | C |
| Answer» C. Pascal | |
| 202. |
Assigning objects takes place while passing the arguments. |
| A. | True |
| B. | False |
| Answer» C. | |
| 203. |
Assigning reference to an object _________________ |
| A. | Will create another copy of the object |
| B. | Will create two different copies of the object |
| C. | Will not create any other copy of the object |
| D. | Will not refer to the object |
| Answer» D. Will not refer to the object | |
| 204. |
We can assign _____________________ |
| A. | Value of one reference variable to another |
| B. | Value of any object to another |
| C. | Value of any type to any object |
| D. | Value of non – reference to another reference |
| Answer» B. Value of any object to another | |
| 205. |
How to make more than one object refer to the same object? |
| A. | Initialize it to null |
| B. | Initialize the object with another at declaration |
| C. | Use constructor to create new object |
| D. | Assign the address directly |
| Answer» C. Use constructor to create new object | |
| 206. |
If more than one object refer to the same address, any changes made |
| A. | Can be made visible to specific objects |
| B. | Will be specific to one object only |
| C. | From any object will be visible in all |
| D. | Doesn’t changes the values of all objects |
| Answer» D. Doesn’t changes the values of all objects | |
| 207. |
Use of assignment operator ____________________ |
| A. | Changes its use, when used at declaration and in normal assignment |
| B. | Doesn’t changes its use, whatever the syntax might be |
| C. | Assignment takes place in declaration and assignment syntax |
| D. | Doesn’t work in normal syntax, but only with declaration |
| Answer» B. Doesn’t changes its use, whatever the syntax might be | |
| 208. |
How many objects can be assigned to a single address? |
| A. | Only 1 |
| B. | At most 7 |
| C. | At most 3 |
| D. | As many as required |
| Answer» E. | |
| 209. |
In copy constructor definition, if non const values are accepted only ________ |
| A. | Only const objects will be accepted |
| B. | Only non – const objects are accepted |
| C. | Only const members will not get copied |
| D. | Compiler generates an error |
| Answer» C. Only const members will not get copied | |
| 210. |
Declaring a copy constructor doesn’t suppresses the compiler generated copy assignment operator. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 211. |
If programmer doesn’t define any copy assignment operator then ____________________ |
| A. | Compiler gives an error |
| B. | Program fails at run time |
| C. | Compiler gives an implicit definition |
| D. | Compiler can’t copy the member values |
| Answer» D. Compiler can’t copy the member values | |
| 212. |
How the argument passed to a function get initialized? |
| A. | Assigned using copy constructor at time of passing |
| B. | Copied directly |
| C. | Uses addresses always |
| D. | Doesn’t get initialized |
| Answer» B. Copied directly | |
| 213. |
If an object is created and another object is assigned to it, then ________________ |
| A. | Copy constructor is called to copy the values |
| B. | Object is copied directly to the object |
| C. | Reference to another object is created |
| D. | The new object is initialized to null values |
| Answer» D. The new object is initialized to null values | |
| 214. |
When value of an object is assigned to another object, ___________________ |
| A. | It becomes invalid statement |
| B. | Its values gets copied into another object |
| C. | Its values gets address of the existing values |
| D. | The compiler doesn’t execute that statement |
| Answer» C. Its values gets address of the existing values | |
| 215. |
Why temporary object is not created in return by reference? |
| A. | Because compiler can’t create temporary objects |
| B. | Because the temporary object is created within the function |
| C. | Because return by reference just make the objects points to values memory location |
| D. | Because return by reference just make the object point to null |
| Answer» D. Because return by reference just make the object point to null | |
| 216. |
If an object is being returned by value then __________________________ |
| A. | Its member values are made constant |
| B. | Its member values have to be copied individually |
| C. | Its member values are not used |
| D. | Its member values are copied using copy constructor |
| Answer» E. | |
| 217. |
If an object is passed by reference to a function then it must be returned by reference. |
| A. | True |
| B. | False |
| Answer» C. | |
| 218. |
Can we return an array of objects? |
| A. | Yes, always |
| B. | Ye, only if objects are having same values |
| C. | No, because objects contain many other values |
| D. | No, because objects are single entity |
| Answer» B. Ye, only if objects are having same values | |
| 219. |
If object is passed by reference ____________________ |
| A. | Temporary object is created |
| B. | Temporary object is created inside the function |
| C. | Temporary object is created for few seconds |
| D. | Temporary object is not created |
| Answer» E. | |
| 220. |
Which error will be produced if a local object is returned by reference outside a function? |
| A. | Out of memory error |
| B. | Run time error |
| C. | Compile time error |
| D. | No error |
| Answer» D. No error | |
| 221. |
How many independent objects can be returned at same time from a function? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 222. |
If an object is declared inside the function then ____________________ outside the function |
| A. | It can be returned by reference |
| B. | It can’t be returned by reference |
| C. | It can be returned by address |
| D. | It can’t be returned at all |
| Answer» C. It can be returned by address | |
| 223. |
Which is the correct syntax for defining a function which passes an object by reference? |
| A. | className& functionName ( ) |
| B. | className* functionName( ) |
| C. | className-> functionName( ) |
| D. | &className functionName() |
| Answer» B. className* functionName( ) | |
| 224. |
Which is the correct syntax for returning an object by value? |
| A. | void functionName ( ){ } |
| B. | object functionName( ) { } |
| C. | class object functionName( ) { } |
| D. | ClassName functionName ( ){ } |
| Answer» E. | |
| 225. |
Where the temporary objects (created while return by value) are created? |
| A. | Outside the function scope |
| B. | Within the function |
| C. | Inside the main function |
| D. | Inside the calling function |
| Answer» C. Inside the main function | |
| 226. |
Whenever an object is returned by value ____________________ |
| A. | A temporary object is created |
| B. | Temporary object is not created |
| C. | Temporary object may or may not be created |
| D. | New permanent object is created |
| Answer» B. Temporary object is not created | |
| 227. |
In which of the following way(s) can the object be returned from a function? |
| A. | Can only be returned by value |
| B. | Can only be returned by reference |
| C. | Can be returned either by value or reference |
| D. | Can neither be returned by value nor by reference |
| Answer» D. Can neither be returned by value nor by reference | |
| 228. |
Pass by reference and pass by value can’t be done simultaneously in a single function argument list. |
| A. | True |
| B. | False |
| Answer» C. | |
| 229. |
In which type is new memory location will be allocated? |
| A. | Only in pass by reference |
| B. | Only in pass by value |
| C. | Both in pass by reference and value |
| D. | Depends on the code |
| Answer» C. Both in pass by reference and value | |
| 230. |
If the object is not to be passed to any function but the values of the object have to be used then: |
| A. | The data members should be passed separately |
| B. | The data members and member functions have to be passed separately |
| C. | The values should be present in other variables |
| D. | The object must be passed |
| Answer» B. The data members and member functions have to be passed separately | |
| 231. |
What exactly is passed when an object is passed by reference? |
| A. | The original object name |
| B. | The original object class name |
| C. | The exact address of the object in memory |
| D. | The exact address of data members |
| Answer» D. The exact address of data members | |
| 232. |
Can data members be passed to a function using the object? |
| A. | Yes, it can be passed only inside class functions |
| B. | Yes, only if the data members are public and are being passed to a function outside the class |
| C. | No, can’t be passed outside the class |
| D. | No, can’t be done |
| Answer» C. No, can’t be passed outside the class | |
| 233. |
If an object is passed by value, _________________ |
| A. | Temporary object is used in the function |
| B. | Local object in the function is used |
| C. | Only the data member values are used |
| D. | The values are accessible from the original object |
| Answer» C. Only the data member values are used | |
| 234. |
What is the type of object that should be specified in argument list? |
| A. | Function name |
| B. | Object name itself |
| C. | Caller function name |
| D. | Class name of object |
| Answer» E. | |
| 235. |
Copy constructor definition requires __________________ |
| A. | Object to be passed by value |
| B. | Object not to be passed to it |
| C. | Object to be passed by reference |
| D. | Object to be passed with each data member value |
| Answer» D. Object to be passed with each data member value | |
| 236. |
Pass by reference of an object to a function _______________ |
| A. | Affects the object in called function only |
| B. | Affects the object in prototype only |
| C. | Affects the object in caller function |
| D. | Affects the object only if mentioned with & symbol with every call |
| Answer» D. Affects the object only if mentioned with & symbol with every call | |
| 237. |
If object is passed by value, ________________ |
| A. | Copy constructor is used to copy the values into another object in the function |
| B. | Copy constructor is used to copy the values into temporary object |
| C. | Reference to the object is used to access the values of the object |
| D. | Reference to the object is used to created new object in its place |
| Answer» B. Copy constructor is used to copy the values into temporary object | |
| 238. |
Which symbol should be used to pass the object by reference in C++? |
| A. | & |
| B. | @ |
| C. | $ |
| D. | $ or & |
| Answer» B. @ | |
| 239. |
The object _______________ |
| A. | Can be passed by reference |
| B. | Can be passed by value |
| C. | Can be passed by reference or value |
| D. | Can be passed with reference |
| Answer» D. Can be passed with reference | |
| 240. |
Passing object to a function _______________ |
| A. | Can be done only in one way |
| B. | Can be done in more than one ways |
| C. | Is not possible |
| D. | Is not possible in OOP |
| Answer» C. Is not possible | |
| 241. |
If static data member are made inline, ______________ |
| A. | Those should be initialized outside the class |
| B. | Those can’t be initialized with the class |
| C. | Those can be initialized within the class |
| D. | Those can’t be used by class members |
| Answer» D. Those can’t be used by class members | |
| 242. |
The static data member ______________ |
| A. | Can be mutable |
| B. | Can’t be mutable |
| C. | Can’t be integer |
| D. | Can’t be characters |
| Answer» C. Can’t be integer | |
| 243. |
We can use the static member functions and static data member __________________ |
| A. | Even if class object is not created |
| B. | Even if class is not defined |
| C. | Even if class doesn’t contain any static member |
| D. | Even if class doesn’t have complete definition |
| Answer» B. Even if class is not defined | |
| 244. |
Which among the following can’t be used to access the members in any way? |
| A. | Scope resolution |
| B. | Arrow operator |
| C. | Single colon |
| D. | Dot operator |
| Answer» D. Dot operator | |
| 245. |
The keyword static is used _______________ |
| A. | With declaration inside class and with definition outside the class |
| B. | With declaration inside class and not with definition outside the class |
| C. | With declaration and definition wherever done |
| D. | With each call to the member function |
| Answer» C. With declaration and definition wherever done | |
| 246. |
Which keyword should be used to declare the static member functions? |
| A. | static |
| B. | stat |
| C. | const |
| D. | common |
| Answer» B. stat | |
| 247. |
The static member functions _______________ |
| A. | Can’t be declared const |
| B. | Can’t be declared volatile |
| C. | Can’t be declared const or volatile |
| D. | Can’t be declared const, volatile or const volatile |
| Answer» E. | |
| 248. |
The static members are _____________________ |
| A. | Created with each new object |
| B. | Created twice in a program |
| C. | Created as many times a class is used |
| D. | Created and initialized only once |
| Answer» E. | |
| 249. |
Which among the following is not applicable for the static member functions? |
| A. | Variable pointers |
| B. | void pointers |
| C. | this pointer |
| D. | Function pointers |
| Answer» D. Function pointers | |
| 250. |
Which is correct syntax to access the static member functions with class name? |
| A. | className . functionName; |
| B. | className -> functionName; |
| C. | className : functionName; |
| D. | className :: functionName; |
| Answer» E. | |