MCQOPTIONS
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MCQOPTIONS
This section includes 301 Mcqs, each offering curated multiple-choice questions to sharpen your Matlab knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The standard library inherited from istream & ostream |
| A. | Ios |
| B. | iostream |
| C. | ifstream |
| D. | ofstream |
| Answer» C. ifstream | |
| 52. |
The duplication of inherited members due to the multiple paths can be avoided by making acommon base class is called |
| A. | Abstract class |
| B. | Virtual base class |
| C. | Multiple inheritance |
| D. | Nesting of classes |
| Answer» C. Multiple inheritance | |
| 53. |
What will be the values of x, m and n after the execution of the following statements? int x, m, n;m = 10; n = 15; x = ++m + n++; |
| A. | x=25, m=10, n=15 |
| B. | x=26, m=11, n=16 |
| C. | x=27, m=11, n=16 |
| D. | x=27, m=10, n=15 |
| Answer» C. x=27, m=11, n=16 | |
| 54. |
‐‐‐‐‐‐‐‐‐‐‐ Statement used to branch unconditionally from one point to another in the program. |
| A. | Jump |
| B. | goto |
| C. | break |
| D. | exit(0) |
| Answer» C. break | |
| 55. |
The instructions, which are used in programming, are called ‐‐‐‐‐‐‐‐ |
| A. | Data type |
| B. | Keywords |
| C. | Objects |
| D. | Identifiers |
| Answer» C. Objects | |
| 56. |
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» D. Both 1 and 2 are incorrect. | |
| 57. |
The ‐‐‐‐‐‐‐ are used to check the relationship between two numeric operands or expressions. |
| A. | Logical operators |
| B. | Relational operators |
| C. | Arithmetic operators |
| D. | Bitwise operators |
| Answer» C. Arithmetic operators | |
| 58. |
‐‐‐‐‐‐ refers to the use of the same thing for different purpose. |
| A. | Function declaration |
| B. | Overloading |
| C. | Function calling |
| D. | Prototyping |
| Answer» C. Function calling | |
| 59. |
Which of the following function that must contain in all C++ Programs |
| A. | start() |
| B. | system() |
| C. | main() |
| D. | program() |
| Answer» D. program() | |
| 60. |
Identify the data type of the value ‐2567113254L |
| A. | Long integer |
| B. | Integer |
| C. | Short integer |
| D. | Big integer |
| Answer» B. Integer | |
| 61. |
The function contain in the ios class to set width |
| A. | width() |
| B. | precision() |
| C. | fill() |
| D. | setf() |
| Answer» B. precision() | |
| 62. |
Write the range of value of the data type ‘int’ |
| A. | ‐32,768 to 32,767 |
| B. | 0 to 65535 |
| C. | 0 to 65536 |
| D. | 0 to 32768 |
| Answer» B. 0 to 65535 | |
| 63. |
Which function is in the ostream class |
| A. | get() |
| B. | read() |
| C. | write |
| D. | cin |
| Answer» D. cin | |
| 64. |
Which of the following statement is correct with respect to the use of friend keyword insidea 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» C. An object may be declared as a friend. | |
| 65. |
‐‐‐‐‐‐‐‐‐‐ provides interface between the object’s data and program. |
| A. | object |
| B. | functions |
| C. | class |
| D. | polymorphism |
| Answer» C. class | |
| 66. |
‐‐‐‐‐ function can only be called by another function that is a member of its class. |
| A. | Member function |
| B. | Private member function |
| C. | Nested member function |
| D. | Public member function |
| Answer» C. Nested member function | |
| 67. |
The function contain in the ios class to fill characters in the blank space |
| A. | width() |
| B. | precision() |
| C. | fill() |
| D. | setf() |
| Answer» D. setf() | |
| 68. |
The functions declared inside the class is known as ‐‐‐‐‐‐‐‐ |
| A. | Data members |
| B. | Library functions |
| C. | Member functions |
| D. | User defined functions |
| Answer» D. User defined functions | |
| 69. |
Which of the following is not a feature of OOPs. |
| A. | polymorphism |
| B. | inheritance |
| C. | dynamic binding |
| D. | none of these. |
| Answer» E. | |
| 70. |
A variable is/are |
| A. | String that varies during program execution |
| B. | A portion of memory to store a determined value |
| C. | Those numbers that are frequently required in programs |
| D. | None of these |
| Answer» C. Those numbers that are frequently required in programs | |
| 71. |
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» E. | |
| 72. |
‐‐‐‐‐ statement is used to print a blank line in CPP program |
| A. | “\n” |
| B. | endl |
| C. | Both ‘a’ and ‘b’ |
| D. | None of these |
| Answer» D. None of these | |
| 73. |
The wrapping up of data and functions into a single unit is called ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐. |
| A. | inheritance |
| B. | encapsulation |
| C. | data hiding |
| D. | polymorphism |
| Answer» C. data hiding | |
| 74. |
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» D. setiosflags() | |
| 75. |
The function contain in the class iomanip to set width |
| A. | setw() |
| B. | set precision() |
| C. | set fill() |
| D. | setiosflags() |
| Answer» B. set precision() | |
| 76. |
The function used to disply one character at a time |
| A. | get() |
| B. | put() |
| C. | getline() |
| D. | write() |
| Answer» C. getline() | |
| 77. |
classes are ‐‐‐‐‐‐‐‐ datatype. |
| A. | derived |
| B. | user‐defined |
| C. | built‐in |
| D. | both a & c |
| Answer» C. built‐in | |
| 78. |
Which of the following statement will be correct if the function has three arguments passedto 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» B. The first argument will be the default argument. | |
| 79. |
The << operator is known as‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐. |
| A. | put to |
| B. | get from |
| C. | insertion |
| D. | both a & c |
| Answer» E. | |
| 80. |
The keyword to convert pointer into non pointer & non pointer into pointer |
| A. | Const_cast |
| B. | reinterpret_cast |
| C. | static_cast |
| D. | implicit |
| Answer» C. static_cast | |
| 81. |
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» C. function | |
| 82. |
The ‐‐‐‐‐‐‐‐‐ principle helps the programmer to build secure programs. |
| A. | operator overloading |
| B. | encapsulation |
| C. | data hiding |
| D. | polymorphism |
| Answer» D. polymorphism | |
| 83. |
Which one of the following is the correct operator to compare two values |
| A. | := |
| B. | 0 |
| C. | Equal |
| D. | 0 |
| Answer» E. | |
| 84. |
A ‐‐‐‐‐ is the name of the storage location |
| A. | Identifier |
| B. | Variable |
| C. | Keyword |
| D. | Token |
| Answer» C. Keyword | |
| 85. |
What are the basic run time entities in an object oriented program? |
| A. | objects |
| B. | functions |
| C. | datas |
| D. | none of these |
| Answer» B. functions | |
| 86. |
What is the final value of x when the code int x; for(x=0; x<10; x++) {} is run? |
| A. | 10 |
| B. | 9 |
| C. | 1 |
| Answer» B. 9 | |
| 87. |
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ refers to the linking of procedure call to the code to be executed in response to thecall. |
| A. | polymorphism |
| B. | functions |
| C. | dynamic binding |
| D. | object |
| Answer» D. object | |
| 88. |
The function that is a bridge between two classes |
| A. | Friend function |
| B. | Nesting of member function |
| C. | Inline function |
| D. | Static function |
| Answer» B. Nesting of member function | |
| 89. |
A stream of byte that is the interface between IO and IO devices |
| A. | Streams |
| B. | class |
| C. | object |
| D. | file |
| Answer» B. class | |
| 90. |
Which of the following is a UML constituents |
| A. | things |
| B. | relationships |
| C. | diagrams |
| D. | all of the above |
| Answer» E. | |
| 91. |
Which of the following is an exit controlled loop? |
| A. | While |
| B. | For |
| C. | Switch |
| D. | do…. While |
| Answer» E. | |
| 92. |
Find out the error in following block of code. If (x = 100) Cout << “x is 100”; |
| A. | 100 should be enclosed in quotations |
| B. | There is no semicolon at the end of first line |
| C. | Equals to operator mistake |
| D. | Variable x should not be inside quotation |
| Answer» D. Variable x should not be inside quotation | |
| 93. |
Conversion of data type is called |
| A. | self referencing |
| B. | type casting |
| C. | virtual function |
| D. | abstract class |
| Answer» C. virtual function | |
| 94. |
_________ used to make a copy of one class object from another class object of the sameclass type. |
| A. | constructor |
| B. | copy constructor |
| C. | destructor |
| D. | default constructor |
| Answer» C. destructor | |
| 95. |
A derived class with only one base class |
| A. | Multilevel inheritance |
| B. | Multiple inheritance |
| C. | Single inheritance |
| D. | Hierarchical Inheritance |
| Answer» D. Hierarchical Inheritance | |
| 96. |
The mechanism of giving special meaning to an operator |
| A. | Operator overloading |
| B. | Function overloading |
| C. | Constructor overloading |
| D. | Virtual function |
| Answer» B. Function overloading | |
| 97. |
Which of the following means "The use of an object of one class in definition of anotherclass"? |
| A. | Encapsulation |
| B. | Inheritance |
| C. | Composition |
| D. | Abstraction |
| Answer» D. Abstraction | |
| 98. |
Observe following function declaration and choose the best Ans:: int divide ( int a, int b = 2 ) |
| A. | Variable b is of integer type and will always have value 2 |
| B. | Variable a and b are of int type and the initial value of both variables is 2 |
| C. | Variable b is international scope and will have value 2 |
| D. | Variable b will have value 2 if not specified when calling function |
| Answer» E. | |
| 99. |
The qualifier ‐‐‐‐‐‐ tells the compiler that the function should not modify the argument. |
| A. | Const |
| B. | Static |
| C. | Constant |
| D. | Inline |
| Answer» B. Static | |
| 100. |
‐‐‐‐‐‐‐‐ are normally used to maintain values common to the entire class. |
| A. | Dynamic variables |
| B. | Static variables |
| C. | Private variables |
| D. | Public variables |
| Answer» C. Private variables | |