Object Oriented Programming Set 2 MCQs

Q1 | When arguments are passed by value, the function works with the original arguments in the calling program.

true

false

Q2 | Which of the following can legitimately be passed to a function?

a constant

a variable

a structure

all of the above

Q3 | How many values can be returned from a function?

0

1

2

3

Q4 | When a function returns a value, the entire function call can appear on the right side of the equal sign and be assigned to another variable.

true

false

Q5 | When an argument is passed by reference

a variable is created in the function to hold the argument’s value.

the function cannot access the argument’s value.

a temporary variable is created in the calling program to hold the argument’s value.

the function accesses the argument’s original value in the calling program.

Q6 | Overloaded functions

are a group of functions with the same name.

all have the same number and types of arguments.

make life simpler for programmers.

a and c

Q7 | A static local variable is used to

make a variable visible to several functions.

make a variable visible to only one function.

retain a value when a function is not executing.

b and c

Q8 | In C++ there can be an array of four dimensions.

true

false

Q9 | When an array name is passed to a function, the function

accesses exactly the same array as the calling program.

refers to the array using a different name than that used by the calling program.

refers to the array using the same name as that used by the calling program.

a and b

Q10 | The compiler will complain if you try to access array element 14 in a 10-element array.

true

false

Q11 | The extraction operator (>>) stops reading a string when it encounters a space.

true

false

Q12 | You can read input that consists of multiple lines of text using

the normal cout <

the cin.get() function with one argument.

the cin.get() function with two arguments.

the cin.get() function with three arguments.

Q13 | You should prefer C-strings to the Standard C++ string class in new programs.

true

false

Q14 | Objects of the string class

are zero-terminated.

can be copied with the assignment operator.

do not require memory management.

both b and c

Q15 | Can destuctors be private in C++?

yes

no

Q16 | What is value of size?

28

32

20

24

Q17 | What value will be printed for data.i?

10 220.5 230.5 unpredictable value

220

230.5

unpredictable value

Q18 | What is the compilation error for thisprogram?

each undeclared identifier is reported only once

cout and cin not declared in scope

invalid conversion from int to float

all of the above

Q19 | What will be the output of the program?

1

default value

will not compile

none of the above

Q20 | What is the output of the program?

0 0

x = 0 y = 0

compilation error

Q21 | Which function will change the state of the object?

only set()

only display()

display() and set() both

none of the above

Q22 | What will be the output of the following program?

compilation error: display() cannot be accessed in application

compilation error:test class object cannot be accessed in function demo

compilation error: variable x is private in test

both a and b

Q23 | The only integer that can be assigned directly to a pointer is

0

-1

999

-999

Q24 | Which of the following feature is not supported by C++?

exception handling

reflection

operator overloading

namespace

Q25 | The operators that cannot be overloaded is

*

-

::

()