Cpp Quiz interview questions

Keyword typed is used to declare

1. A synonym for an existing type
2. Absence of a type
3. Objects that can be modified outside of a program control
4. A member function that is defined in a subclass

In C++ programming language, to write data that contains variables of type flat to an object of type of stream, which of the following should be used?

1. Put ( )
2. Seekg ( )
3. Write ( )
4. Insertion operator

Classes are useful because they

1. Can closely model objects in the real world
2. Bring together all aspects of an entity in one place
3. Permit data to be hidden from other classes
4. Are removed from memory when not in use

A function argument is a

1. Value sent to function by the calling program
2. Value returned by the function to the calling program
3. Variable in the function that receives a value from the calling program
4. Way that functions resist accepting the calling program’s values

The break statement causes an exit

1. From the innermost loop or switch
2. Only from the innermost switch
3. Only from the innermost loop
4. From all loops and switches

Element double array [7] is which element of the array?

1. Sixth
2. Seventh
3. Eighth
4. Impossible

In C++, a structure brings together a group of

1. Items of the same data type
2. Integers with user-defined names
3. Related data items, variables
4. All of these

In C++, which of the following can legitimately be passed to a function?

1. A constant
2. A variable
3. A structure
4. All of these

The public files in a class library usually contain

1. Variable definition
2. Class declarations
3. Constant definitions
4. Member function definitions

The member function can always access the data in

1. Any object of the class of which it is a member
2. The public part of its class
3. The class of which it is member
4. The object of which is a member

In a stock, the data item placed on the stack first is

1. Given as index zero
2. Not given as index number
3. The first data item to be removed
4. The last data item to be removed

Breaking a program into several files is desirable because

1. A program can be divided functionally
2. Each programmer can work on a separate file
3. Some files don’t need to be recompiled each time
4. Files can be marketed in object form

Turbo C++ library function can be used

1. Draw lines and circles
2. Write text in a variety of fonts and sizes
3. Color any closed figure
4. All of these

Which of the following are good reasons to use an object oriented language?

1. An object oriented program can be taught to correct its own errors
2. Program statements are simpler than in procedural language
3. We can define our own data types
4. None of these

In a class specified, data or functions and designated private are accessible

1. Only to public members of class
2. Only if you know the password
3. To any function in the program
4. To member functions of that class

When a language has the capability to produce new data types, it is called

1. Extensible
2. Encapsulated
3. Reprehensible
4. None of these

The dot operator connects which of the following two entities?

1. Class object and member of that class
2. Class and member of that class
3. Class object and a class
4. Class member and class object

A static function

1. Should be called when an object is destroyed
2. Can be called using the class name and function
3. Is closely connected with an individual object of a class
4. Is used when a dummy object must be created

The function bad( ) is declared in the header file

1. <iostream.h>
2. <stdio.h>
3. <math.h>
4. <stdlib.h>

In C++, a function contained within a class is called

1. A method
2. A class function
3. Member function
4. None of these

A base class

1. behave badly when chips are down
2. will be a generalized version of its derived classes
3. correspond to something in the real world
4. offer model more specific objects than its derived classes

Copy constructor is invoked when a/an

1. Argument is passed by value
2. Argument is passed by reference
3. Function returns for reference
4. Function returns by value

A project file

1. contains instructions for compiling and linking
2. contains definitions for C++ variables
3. examines contents of the files in the project
4. examines contents of the files in the project

In C++, programs, the keyword friend appears in the

1. class allowing access to another class
2. private section of a class
3. public section of a class
4. all of these

A C++ stream is

1. Associated with a particular class
2. Flow of control through a function
3. A file
4. A flow of data from one place to another

The keyword volatile is used to declare

1. Objects that can be modified outside of a program control
2. Absence of a type
3. A member function that is defined in a subclass
4. All of these

In C language, the break statement causes an exit

1. Only from the innermost switch
2. Only from the innermost loop
3. From all loops and switches
4. From the innermost loop or switch

In a for loop with a multi-statement, loop body semicolons should appear

1. The test expression
2. Each statement within the loop body
3. The closing brace in a multi-statement loop body
4. Both (a) and (b)

In C++, when an argument is passed by reference

1. A variable is created in the function to hold the argument’s value
2. A temporary variable is created in the calling program to hold the argument’s value
3. The function cannot access the argument’s value
4. The function accesses the argument’s original value in the calling program

In new operator

1. Each link contains data or a pointer to data
2. Each link contains a pointer to the next link
3. Links are stored in an array
4. An array of pointers point to the links