C++ Programming Advanced Level Test! Trivia Quiz
Below is a C++ programming advanced level test that is perfect for testing out just how ready you are to tackle the upcoming certification exam and your capability to deliver the best service to your clients. Give it a try and see just how much you know about the most popular computer programming language. All the best, and keep practicing!
Questions and Answers
- 1.
A derived class inherits the __________ of its base class.
Explanation
A derived class inherits the members of its base class. In object-oriented programming, a derived class is a class that is created from an existing class, known as the base class. The derived class inherits all the members of the base class, including variables, methods, and properties. This means that the derived class can access and use these members without having to redefine them. Inheritance allows for code reuse and promotes the concept of hierarchy in class relationships.Rate this question:
- 2.
When both a base class and a derived class have constructors, the base class's constructor is called __________ (first/last).
Explanation
When both a base class and a derived class have constructors, the base class's constructor is called first. This is because the derived class inherits the properties and behavior of the base class, and in order to properly initialize the derived class object, the base class constructor needs to be called first to set up the base class members. Once the base class constructor has executed, then the derived class constructor can be called to initialize the additional members specific to the derived class.Rate this question:
- 3.
An overridden base class function may be called by a function in a derived class by using the __________ operator.
Explanation
In object-oriented programming, when a derived class overrides a function from its base class, the function in the base class is hidden. However, there may be cases where we want to call the base class function from within the derived class. In such cases, we can use the scope resolution operator (::) to specify the base class and access the function. This allows us to call the overridden base class function explicitly within the derived class.Rate this question:
- 4.
When a derived class redefines a function in a base class, which version of the function do objects that are defined of the base class call? __________
Explanation
When a derived class redefines a function in a base class, objects that are defined of the base class call the base class version of the function. This means that even if the derived class has its own implementation of the function, the objects of the base class will still use the original implementation from the base class.Rate this question:
- 5.
A(n) __________ member function in a base class expects to be overridden in a derived class.
Explanation
A virtual member function in a base class expects to be overridden in a derived class. This means that the derived class can provide its own implementation of the function, which will be called instead of the base class's implementation when the function is called through a pointer or reference to the base class. This allows for polymorphism, where different derived classes can have different behaviors for the same function.Rate this question:
- 6.
__________ binding is when the compiler binds member function calls at compile time.
Explanation
Static binding is when the compiler binds member function calls at compile time. This means that the compiler determines which function to call based on the type of the object at compile time, rather than at runtime. Static binding is used when the function being called is not virtual or when the object type is known at compile time. In this case, the correct answer is "static" because it accurately describes the type of binding where member function calls are resolved at compile time.Rate this question:
- 7.
__________ binding is when a function call is bound at runtime.
Explanation
Dynamic binding is when a function call is bound at runtime. This means that the specific function to be called is determined during the execution of the program, rather than being determined at compile time. This allows for more flexibility and adaptability in the code, as the appropriate function can be chosen based on the current state or context of the program.Rate this question:
- 8.
__________ is when member functions in a class hierarchy behave differently, depending upon which object performs the call.
Explanation
Polymorphism is the concept in object-oriented programming where member functions in a class hierarchy can behave differently based on the object that performs the call. This allows for flexibility and code reusability as different objects can have their own unique implementations of the same function. Polymorphism is achieved through the use of virtual functions and function overriding, allowing for dynamic binding and runtime determination of which function to call based on the type of object.Rate this question:
- 9.
When a pointer to a base class is made to point to a derived class, the pointer ignores any __________ the derived class performs, unless the function is __________.
Explanation
When a pointer to a base class is made to point to a derived class, the pointer ignores any overrides the derived class performs, unless the function is virtual. This means that if a derived class has a function with the same name as a function in the base class, the pointer will call the function in the base class unless that function is declared as virtual in the base class. If the function is declared as virtual, the pointer will call the function in the derived class instead. This allows for polymorphism and dynamic binding of functions at runtime.Rate this question:
- 10.
A(n) __________ class cannot be instantiated.
Explanation
An abstract base class cannot be instantiated because it is meant to be a blueprint for other classes to inherit from. It contains one or more abstract methods which are meant to be overridden by the derived classes. The purpose of an abstract base class is to provide common functionality and structure to its derived classes, but it cannot be used to create objects directly.Rate this question:
- 11.
A(n) __________ function has no body, or definition, in the class in which it is declared.
Explanation
A pure virtual function is a function that has no body or definition in the class in which it is declared. It is declared using the "pure virtual" keyword and is intended to be overridden by derived classes. This allows the base class to provide a common interface for all derived classes, while leaving the implementation details to be defined by each individual derived class.Rate this question:
- 12.
A(n) __________ of inheritance is where one class is derived from a second class, which in turn is derived from a third class.
Explanation
Inheritance is a mechanism in object-oriented programming where a class can inherit properties and behaviors from another class. In this case, the term "chain" is used to describe the type of inheritance where one class is derived from a second class, and the second class is derived from a third class. This creates a chain-like relationship between the classes, with each class inheriting from the one above it. This allows for the reuse of code and promotes code organization and modularity.Rate this question:
- 13.
__________ is where a derived class has two or more base classes.
Explanation
Multiple inheritance is a feature in object-oriented programming where a derived class can inherit from two or more base classes. This allows the derived class to inherit and combine the properties and behaviors of multiple parent classes. It provides flexibility and allows for code reuse by inheriting from multiple sources. However, it can also lead to complexity and potential conflicts if the same method or attribute is inherited from multiple base classes.Rate this question:
- 14.
In multiple inheritances, the derived class should always __________ a function that has the same name in more than one base class.
Explanation
In multiple inheritances, the derived class should always override or redefine a function that has the same name in more than one base class. This is necessary because when a derived class inherits from multiple base classes, it may inherit multiple versions of the same function. To avoid ambiguity and ensure that the correct version of the function is used, the derived class must explicitly override or redefine the function.Rate this question:
- 15.
The base class's access specification affects the way base class member functions may access base class member variables.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The base class's access specification does not affect the way base class member functions access base class member variables. The access specification only determines the visibility of the member variables to derived classes and external functions, not to member functions of the base class itself. Therefore, the statement is false.Rate this question:
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- 16.
The base class's access specification affects the way the derived class inherits members of the base class.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The access specification of the base class determines the visibility and accessibility of its members in the derived class. If the base class's members are declared as public, they can be accessed by the derived class and its objects. If they are declared as protected, they can be accessed by the derived class and its objects, as well as by any other class that inherits from the derived class. If they are declared as private, they cannot be accessed by the derived class or any other class. Therefore, the access specification of the base class does affect the way the derived class inherits the members of the base class.Rate this question:
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- 17.
Private members of a private base class become inaccessible to the derived class.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Private members of a private base class become inaccessible to the derived class because private members are only accessible within the class they are declared in. Inheritance allows the derived class to inherit the members of the base class, but if those members are declared as private, they cannot be accessed or inherited by the derived class. This ensures that the derived class cannot directly access or modify the private members of the base class, maintaining encapsulation and data hiding.Rate this question:
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- 18.
Public members of a private base class become private members of the derived class.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In object-oriented programming, when a class is derived from a private base class, the public members of the base class are not directly accessible to the derived class or any other class. They become private members of the derived class, meaning they can only be accessed within the scope of the derived class itself. This is because the private access specifier restricts the visibility of the members to only the class in which they are defined. Therefore, the statement "Public members of a private base class become private members of the derived class" is true.Rate this question:
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- 19.
Protected members of a private base class become public members of the derived class.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Protected members of a private base class do not become public members of the derived class. Inheritance in C++ has three access specifiers: public, protected, and private. When a base class is declared as private, its members are only accessible within the base class itself and not accessible by the derived class. Therefore, protected members of a private base class do not become public members of the derived class.Rate this question:
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- 20.
Public members of a protected base class become private members of the derived class
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
This statement is false. Inheritance in C++ allows the derived class to access the protected members of the base class. However, the access level does not change from protected to private. Protected members of the base class remain protected in the derived class, meaning they can still be accessed by the derived class and its derived classes.Rate this question:
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- 21.
Private members of a protected base class become inaccessible to the derived class.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In object-oriented programming, a protected base class allows its derived classes to access its members. However, private members of a protected base class are not accessible to the derived class. This means that the derived class cannot directly access or modify the private members of the protected base class. Therefore, the statement "Private members of a protected base class become inaccessible to the derived class" is true.Rate this question:
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- 22.
Protected members of a public base class become public members of the derived class.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Protected members of a public base class do not become public members of the derived class. Instead, they become protected members of the derived class. This means that the derived class can access and modify these protected members, but they are not accessible to objects of the derived class or any other classes.Rate this question:
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- 23.
The base class constructor is called after the derived class constructor.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
In object-oriented programming, the base class constructor is called before the derived class constructor. This is because when an object of the derived class is created, the base class constructor is responsible for initializing the inherited members before the derived class constructor can initialize its own members. Therefore, the statement that the base class constructor is called after the derived class constructor is incorrect.Rate this question:
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- 24.
The base class destructor is called after the derived class destructor.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In object-oriented programming, when a derived class is created from a base class, it inherits the properties and methods of the base class. When an object of the derived class is destroyed, its destructor is called first. After that, the destructor of the base class is called. This is because the derived class may have additional resources or memory allocated that need to be cleaned up before the base class is destroyed. Therefore, the statement "The base class destructor is called after the derived class destructor" is true.Rate this question:
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- 25.
It isn't possible for a base class to have more than one constructor.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
A base class can have more than one constructor. This allows the derived classes to choose which constructor to call when creating an instance of the derived class. Having multiple constructors in a base class provides flexibility and allows for different initialization options.Rate this question:
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- 26.
Arguments are passed to the base class constructor by the derived class constructor.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
When a derived class is created, it automatically calls the constructor of its base class. In order to pass arguments to the base class constructor, the derived class constructor needs to include those arguments and pass them to the base class constructor using the appropriate syntax. Therefore, the statement "Arguments are passed to the base class constructor by the derived class constructor" is true.Rate this question:
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- 27.
A member function of a derived class may not have the same name as a a member function of the base class.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
A member function of a derived class may have the same name as a member function of the base class. This is known as function overriding, where the derived class provides its own implementation of the function. The derived class can choose to override the base class function by providing a different implementation or it can choose to inherit the function from the base class without any changes.Rate this question:
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- 28.
Pointers to a base class may be assigned the address of a derived class object.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In object-oriented programming, a base class is a class that is inherited by other classes, called derived classes. Pointers are variables that store memory addresses. In C++, a pointer to a base class can be assigned the address of a derived class object because a derived class inherits all the members and methods of the base class. This allows for polymorphism, where a pointer to a base class can be used to access the members and methods of both the base class and any derived classes. Therefore, the statement is true.Rate this question:
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- 29.
A base class may not be derived from another class.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
This statement is false because a base class can indeed be derived from another class. In object-oriented programming, inheritance allows a class to inherit properties and methods from another class. The derived class, also known as a subclass or child class, can extend or modify the behavior of the base class, also known as a superclass or parent class. This is a fundamental concept in object-oriented programming and allows for code reuse and the creation of more specialized classes. Therefore, the correct answer is false.Rate this question:
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- 30.
The line containing a throw statement is known as the __________.
Correct Answer
throw pointExplanation
The line containing a throw statement is known as the throw point.Rate this question:
- 31.
The __________ block contains code that directly or indirectly might cause an exception to be thrown.
Correct Answer
tryExplanation
The try block contains code that is potentially risky or may encounter an error, and therefore it is surrounded by a try-catch statement. If an exception occurs within the try block, it can be caught and handled appropriately in the catch block. This allows for better control and management of potential exceptions in the code.Rate this question:
- 32.
The __________ block handles an exception.
Correct Answer
catchExplanation
The catch block handles an exception. In a try-catch statement, the catch block is executed if an exception is thrown within the corresponding try block. It allows the program to catch and handle the exception, preventing it from causing a runtime error and allowing for appropriate error handling or recovery actions to be taken.Rate this question:
- 33.
When writing function or class templates, you use a(n) __________ to specify a generic data type.
Correct Answer
type parameterExplanation
When writing function or class templates, a type parameter is used to specify a generic data type. This allows the template to be used with different data types without having to rewrite the entire code for each specific type. The type parameter acts as a placeholder for the actual data type that will be used when the template is instantiated. This flexibility and reusability are key benefits of using templates in programming.Rate this question:
- 34.
The beginning of a template is marked by a(n) __________.
Correct Answer
template prefixExplanation
The beginning of a template is marked by a template prefix. This is the specific symbol or set of characters that indicates the start of a template. It is used to differentiate the template from the rest of the document or code and allows for proper identification and parsing of the template content. The template prefix serves as a marker or indicator for the system or program to recognize and process the template appropriately.Rate this question:
- 35.
When defining objects of class templates, the __________ you wish to pass into the type parameter must be specified.
Correct Answer
data typeExplanation
When defining objects of class templates, the "data type" you wish to pass into the type parameter must be specified. This means that when creating an instance of a class template, you need to specify the specific data type that will be used as the template parameter. This is necessary because class templates are designed to be generic and work with different data types, so the specific data type needs to be provided in order for the template to be instantiated correctly.Rate this question:
- 36.
A(n) __________ template works with a specific data type.
Correct Answer
specializedExplanation
A specialized template is designed to work with a specific data type. It is tailored to handle and manipulate data of a particular type, providing optimized functionality and operations that are specific to that data type. This allows for more efficient and accurate processing of the data, as the template is specifically designed to handle the unique characteristics and requirements of that particular type.Rate this question:
- 37.
A(n) __________ container organizes data in a sequential fashion similar to an array.
Correct Answer
sequenceExplanation
A sequence container organizes data in a sequential fashion similar to an array. It stores elements in a linear order, where each element is accessed by its position in the sequence. This allows for efficient traversal and manipulation of the data, just like an array.Rate this question:
- 38.
A(n) __________ container uses keys to rapidly access elements.
Correct Answer
associativeExplanation
An associative container uses keys to rapidly access elements. In an associative container, each element is stored with a unique key, and the container provides a fast lookup mechanism based on these keys. This allows for efficient retrieval of elements based on their keys, making it suitable for scenarios where fast access to specific elements is required.Rate this question:
- 39.
__________ are pointer-like objects used to access data stored in a container.
Correct Answer
iteratorsExplanation
Iterators are objects used to access data stored in a container. They act as pointer-like objects, allowing us to traverse through the elements of a container and perform various operations on them. By using iterators, we can access, modify, or delete elements in a container without directly manipulating the container itself. This provides a flexible and efficient way to work with container data, as it allows us to iterate over the elements in a controlled and organized manner.Rate this question:
- 40.
The __________ exception is thrown when the new operator fails to allocate the requested amount of memory
Correct Answer
bad_allocExplanation
The bad_alloc exception is thrown when the new operator fails to allocate the requested amount of memory. This exception is part of the standard exception hierarchy in C++, and it is specifically designed to handle memory allocation failures. When the new operator is unable to allocate memory, it throws a bad_alloc exception, which can then be caught and handled by the programmer.Rate this question:
- 41.
There can be only one catch block in a program.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
False. There can be multiple catch blocks in a program. Catch blocks are used in exception handling to catch and handle specific types of exceptions. By having multiple catch blocks, different types of exceptions can be caught and handled in different ways within the program.Rate this question:
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- 42.
When an exception is thrown, but not caught, the program ignores the error.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
When an exception is thrown, but not caught, the program does not ignore the error. Instead, it terminates the program and displays an error message, indicating that an unhandled exception has occurred. This is because uncaught exceptions disrupt the normal flow of the program and can lead to unexpected behavior or crashes. Therefore, it is important to handle exceptions appropriately to ensure the program's stability and prevent unexpected errors.Rate this question:
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- 43.
Data may be passed with an exception by storing it in members of an exception class.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Data can be passed with an exception by storing it in members of an exception class. When an exception is thrown, the exception object can contain additional information about the error or the state of the program at the time of the exception. This additional data can be stored in the members of the exception class, allowing it to be accessed and used for debugging or error handling purposes. This approach can provide more context and information about the exception, making it easier to diagnose and resolve issues in the code.Rate this question:
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- 44.
Once an exception has been thrown, it is not possible for the program to jump back to the throw point.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Once an exception has been thrown, the program enters an exceptional state and the normal flow of execution is disrupted. The program then looks for an exception handler to catch and handle the exception. If an appropriate exception handler is not found, the program terminates. In this context, "jumping back to the throw point" refers to the program returning to the exact line of code where the exception was thrown. However, once an exception is thrown, the program does not automatically jump back to the throw point. Therefore, the statement is true.Rate this question:
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- 45.
All type parameters defined in a function template must appear at least once in the function parameter list.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
In a function template, all type parameters must be used in the function parameter list at least once. This means that when declaring the function template, all the type parameters must be included in the list of parameters for the function. If a type parameter is not used in the function parameter list, it would result in a compile-time error. Therefore, the statement is true.Rate this question:
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- 46.
The compiler creates an instance of a function template in memory as soon as it encounters the template.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The compiler does not create an instance of a function template in memory as soon as it encounters the template. Instead, the compiler generates the code for the function template when it is instantiated, which happens when the template is used with specific template arguments. This allows the compiler to generate different versions of the function template for different types or values used as template arguments. Therefore, the correct answer is false.Rate this question:
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- 47.
A class object passed to a function template must overload any operators used on the class object by the template.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
When passing a class object to a function template, it is necessary to overload any operators that are used on the class object by the template. This is because function templates are generic and can be used with different types of objects. To ensure that the operators are correctly applied to the class object, the overloaded operators must be defined for that specific class. Therefore, the statement "A class object passed to a function template must overload any operators used on the class object by the template" is true.Rate this question:
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- 48.
Only one generic type may be used with a template.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement is false because templates in programming allow for multiple generic types to be used. Templates provide a way to define a generic class or function that can be used with different types, allowing for flexibility and reusability in code. By using templates, developers can write code that works with different types without having to rewrite the same logic multiple times.Rate this question:
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- 49.
In the function template definition, it is not necessary to use each type parameter declared in the template prefix.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
In the function template definition, it is necessary to use each type parameter declared in the template prefix. This is because the type parameters are placeholders for the actual types that will be used when the function is instantiated. If a type parameter is not used in the function definition, it means that the function cannot handle that type of argument, which defeats the purpose of having a template in the first place. Therefore, it is important to use all the type parameters declared in the template prefix.Rate this question:
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- 50.
It is possible to overload two function templates.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Function templates in C++ allow us to define generic functions that can work with different data types. Overloading refers to having multiple functions with the same name but different parameters. We can overload function templates by defining multiple function templates with the same name but different template parameters or function parameters. This allows us to have different implementations of the same function template depending on the types or number of arguments passed to it. Therefore, it is possible to overload two function templates.Rate this question:
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Sep 14, 2023Quiz Edited by
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May 16, 2013Quiz Created by
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