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MCQOPTIONS
This section includes 4320 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 751. |
A class D can be derived from a class C, which is derived from a class B, which is derived from a class A |
| A. | True |
| B. | False |
| Answer» B. False | |
| 752. |
To use the strcpy function, you must include the _____ header file in your program |
| A. | assign.h |
| B. | copy.h |
| C. | string.h |
| D. | strcopy.h |
| E. | strcpy.h |
| Answer» D. strcopy.h | |
| 753. |
The number of the relational operators in the C language is |
| A. | four |
| B. | six |
| C. | three |
| D. | one |
| E. | None of the above |
| Answer» C. three | |
| 754. |
Which of the following tells C++ to display numbers with two decimal places? |
| A. | setdecimal(2) |
| B. | setiosflags(2) |
| C. | setiosflags(2.00) |
| D. | setprecision(2) |
| Answer» E. | |
| 755. |
The cout << sales[0] + sales[1]; statement will______ |
| A. | display 22000 |
| B. | display 10000 + 12000 |
| C. | display sales[0] + sales[l] |
| D. | result in an error |
| Answer» B. display 10000 + 12000 | |
| 756. |
The most efficient data type for a variable that stores the letter C is the _____ data type |
| A. | Character |
| B. | Double |
| C. | Float |
| D. | Long Integer |
| E. | Short Integer |
| Answer» B. Double | |
| 757. |
The null character needs a space of |
| A. | zero bytes |
| B. | one byte |
| C. | three bytes |
| D. | four bytes |
| E. | None of the above |
| Answer» C. three bytes | |
| 758. |
External documentation includes |
| A. | a printout of the program's code |
| B. | flowcharts |
| C. | IPO charts |
| D. | pseudocode |
| E. | All of the above |
| Answer» B. flowcharts | |
| 759. |
The number of structures than can be declared in a single statement is |
| A. | one |
| B. | two |
| C. | three |
| D. | unlimited |
| Answer» E. | |
| 760. |
To hide a data member from the program, you must declare the data member in the _____ section of the class |
| A. | concealed |
| B. | confidential |
| C. | hidden |
| D. | private |
| E. | restricted |
| Answer» E. restricted | |
| 761. |
Student senior(); is a(n)_________ |
| A. | constructor call with no arguments |
| B. | object instantiation |
| C. | constructor call with all default arguments |
| D. | prototype for a function that returns a student object |
| Answer» E. | |
| 762. |
The statement int n[4] = {11, -13, 17, 105}; |
| A. | assigns the value -13 to [2] |
| B. | assigns the value 17 to n[2] |
| C. | is wrong; it gives an error message |
| D. | assigns the value 18 to n[2] |
| Answer» C. is wrong; it gives an error message | |
| 763. |
Elements in an array are identified by a unique _____ |
| A. | data type |
| B. | order |
| C. | subscript |
| D. | symbol |
| Answer» D. symbol | |
| 764. |
The following statement where T is true and F is false T&&T||F&&T |
| A. | is true |
| B. | is false |
| C. | is wrong |
| D. | not applicable in C language |
| E. | None of the above |
| Answer» B. is false | |
| 765. |
If the code and fee arrays are parallel, the fee that corresponds to the code stored in the code[3] element is located in the _____ element |
| A. | code[2] |
| B. | code[3] |
| C. | fee[2] |
| D. | fee[3] |
| Answer» E. | |
| 766. |
Access specifiers are followed by |
| A. | a comma |
| B. | a semicolon |
| C. | a colon |
| D. | two colons |
| Answer» D. two colons | |
| 767. |
Which of the following statements declares a variable that can contain a decimal number? |
| A. | dec payRate; |
| B. | dec hourlyPay |
| C. | float payRate |
| D. | float hourlyPay; |
| E. | None of the above |
| Answer» E. None of the above | |
| 768. |
Which of the following formulas can be used to generate random integers between 1 and 10? |
| A. | 1 + rand() % (10 - 1 + 1) |
| B. | 1 + (10 - 1 + 1) % rand() |
| C. | 10 + rand() % (10 - 1 + 1) |
| D. | 10 + rand() % (10 + 1) |
| Answer» B. 1 + (10 - 1 + 1) % rand() | |
| 769. |
Format flags may be combined using the _____ |
| A. | bitwise OR operator(|) |
| B. | logical OR operator (||) |
| C. | bitwise AND operator (&) |
| D. | logical AND operator (&&) |
| Answer» B. logical OR operator (||) | |
| 770. |
Which of the following will store the number 320000 as a Float number? |
| A. | counPop = (float) 3.2e5; |
| B. | counPop = (float) 3.2e6; |
| C. | counPop = (float) .32e5; |
| D. | counPop = (float) .32e7; |
| E. | counPop = (float) 3.2-e5; |
| Answer» B. counPop = (float) 3.2e6; | |
| 771. |
The arguments that determine the state of the cout object are called |
| A. | classes |
| B. | manipulators |
| C. | format flags or state flags |
| D. | state controllers |
| Answer» D. state controllers | |
| 772. |
If a class will serve as a base class, most often the base class data members are |
| A. | private |
| B. | protected |
| C. | public |
| D. | polymorphic |
| Answer» D. polymorphic | |
| 773. |
With communicational cohesion |
| A. | a tasks and the data are related |
| B. | the tasks are related; the data are not |
| C. | the data are related; the tasks are not |
| D. | the tasks and the data are unrelated |
| Answer» D. the tasks and the data are unrelated | |
| 774. |
The function printDataMembers() is mot likely a(n) ________ |
| A. | inspector functions |
| B. | mutator functions |
| C. | auxiliary functions |
| D. | manager functions |
| Answer» B. mutator functions | |
| 775. |
The data type listed at the beginning of a value-returning function's header indicates the type of data the function will _____ |
| A. | return |
| B. | pass |
| C. | receive |
| Answer» B. pass | |
| 776. |
The code class Descendant : virtual public Ancestor indicates that |
| A. | the members of Ancestor will be included more than once in Descendant |
| B. | the members of Ancestor will be included only once in Descendant |
| C. | the members of Descendant will be included more than once in Ancestor |
| D. | the members of Descendant will be included only once in Ancestor |
| Answer» C. the members of Descendant will be included more than once in Ancestor | |
| 777. |
Which of the following is a valid condition for an if statement? (The condition should be both syntactically and logically valid.) |
| A. | (age) > 65 |
| B. | (age > 0 and < 10) |
| C. | (sales > 500 && < 800) |
| D. | (sales > 100 && sales <= 1000) |
| E. | (sales > 100 || sales <= 1000) |
| Answer» E. (sales > 100 || sales <= 1000) | |
| 778. |
A pattern for creating an object is called a(n) _____ |
| A. | class |
| B. | attributes |
| C. | private |
| D. | public |
| Answer» B. attributes | |
| 779. |
An asterisk placed after a data type means . |
| A. | array to |
| B. | pointer to |
| C. | address to |
| D. | located to |
| Answer» C. address to | |
| 780. |
An object is a(n) _____ of a class |
| A. | owner |
| B. | function |
| C. | definition |
| D. | instance |
| Answer» E. | |
| 781. |
Which of the following statements creates and initializes a pointer named salesPtr? |
| A. | salesPtr = NULL; |
| B. | *salesPtr = ""; |
| C. | float &salesPtr = NULL; |
| D. | float *salesPtr = ""; |
| E. | float *salesPtr = NULL; |
| Answer» F. | |
| 782. |
Assume a class Derv that is privately derived from class Base. An object of class Derv located in main() can access |
| A. | public members of Base |
| B. | protected members of Base |
| C. | private members of Base |
| D. | public members of Derv |
| Answer» B. protected members of Base | |
| 783. |
Which of the following is an access specifier? |
| A. | particular |
| B. | shielded |
| C. | protected |
| D. | safe |
| Answer» D. safe | |
| 784. |
The switch variable can be of |
| A. | int type only |
| B. | char type only |
| C. | both int as well as char type |
| D. | float type only |
| E. | None of the above |
| Answer» D. float type only | |
| 785. |
Reference variables and const class members _____ |
| A. | must be assigned values in any derived class |
| B. | must never be initialized in a base class |
| C. | must be initialized, rather than assigned values |
| D. | must not exist if a class is to be a base class |
| Answer» D. must not exist if a class is to be a base class | |
| 786. |
Which of the following will store the letter H in a Character variable named initial? |
| A. | initial = 'H' |
| B. | initial = 'H'; |
| C. | initial = "H" |
| D. | initial = "H"; |
| Answer» C. initial = "H" | |
| 787. |
Compared with the classes from which they are derived, inherited classes may have _____ |
| A. | additional data members |
| B. | additional member functions |
| C. | both (a) and (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 788. |
_____ refers to the process of locating and removing the errors in a program |
| A. | Analyzing |
| B. | Correcting |
| C. | Debugging |
| D. | Executing |
| E. | Tracking |
| Answer» D. Executing | |
| 789. |
The functions go in the _____ section of a class definition |
| A. | declaration |
| B. | implementation |
| C. | prototype |
| D. | functioning |
| Answer» C. prototype | |
| 790. |
You can throw _____ |
| A. | a scalar variable |
| B. | a constant |
| C. | a programmer-defined class object |
| D. | any of these |
| Answer» E. | |
| 791. |
One of the valid escape sequences used in the C language is |
| A. | z |
| B. | N |
| C. | t |
| D. | s |
| E. | None of the above |
| Answer» D. s | |
| 792. |
A default constructor |
| A. | takes no arguments |
| B. | has default values for all its arguments |
| C. | either (a) or (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |
| 793. |
Which of the following will increase the value stored in the first element of the fee array by 2? |
| A. | amount[0] = amount[0] + 2; |
| B. | amount, fee[0] = amount, fee [0] + 2; |
| C. | feelnfo.amount[0] = feelnfo.amount[0] + 2; |
| D. | fee[0].amount = fee[0].amount + 2; |
| E. | fee.amount[0] = fee.amount[0] + 2; |
| Answer» E. fee.amount[0] = fee.amount[0] + 2; | |
| 794. |
Which loop always processes its instructions at least once? |
| A. | do-while |
| B. | for |
| C. | while |
| Answer» B. for | |
| 795. |
When a new class is derived from an existing class, the derived class member functions _____ have names that differ from base class function names |
| A. | may |
| B. | may if the two classes have the same name |
| C. | must |
| D. | must not |
| Answer» B. may if the two classes have the same name | |
| 796. |
If you wanted to sort many large objects or structures, it would be most efficient to |
| A. | place them in an array and sort the array |
| B. | place pointers to them in an array and sort the array |
| C. | place them in a linked list and sort the linked list |
| D. | place references to them in an array and sort the array |
| Answer» C. place them in a linked list and sort the linked list | |
| 797. |
A function that is prototyped as double calculate(int num); may ______ |
| A. | receive a double constant such as 3.9 |
| B. | receive a double variable |
| C. | either (a) or (b) |
| D. | neither (a) nor (b) |
| Answer» E. | |
| 798. |
The printer can be accessed using the predefined filename _____ |
| A. | printer file |
| B. | |
| C. | cout |
| D. | PRN, LPT1, etc |
| Answer» E. | |
| 799. |
To use the this pointer with a member function, you _____ |
| A. | declare this as static |
| B. | declare this as global |
| C. | define this as equal to the address of the appropriate object |
| D. | do nothing; it is automatically supplied for you |
| Answer» E. | |
| 800. |
A function that is prototype as int calculate(int num); may |
| A. | receive an integer variable named num from the main() program |
| B. | receive any integer variable from the main() program |
| C. | either (a) or (b) |
| D. | neither (a) nor (b) |
| Answer» D. neither (a) nor (b) | |