What happens if a class does not have a name? The definition of the function must differ from each other by the types and/or the number of arguments in the argument list. All Rights Reserved. Learn more. As a general rule of thumb, use: Love podcasts or audiobooks? Point to remember: each time you leave something for compiler to deduce make sure there is no room for ambiguity left.

View Answer, 15. c) Templates a) Classes cannot have protected data members How compile-time polymorphisms are implemented in C++? d) All of the mentioned Which of the following protocols uses both TCP and UDP? Its Official: Team Oasis is KYC Audited! Only base class function will get called irrespective of object. Out of the following, which is not a member of the class? How many types of polymorphism are there in C++? Breaking down the Stroustrups definition, polymorphism can be divided in two categories: Note that C++ standard defines polymorphic objects as objects whose. a) >> The types and quantity of arguments in the argument list must be different according to the function's definition. Which of the following operators cannot be overloaded? b) Operator overloading d) All of the mentioned Function custom_add() from a previous example works perfectly for adding two numerical values, but adding two chars and getting numerical result makes little sense in given context. d) It will neither have a constructor or destructor So, which one is better?

II) The basic meaning of an operator can be changed. Operator + is overloaded it changes its behavior basing on argument types. d) By declaring a pure virtual function in a class d) C++ allows both static and dynamic type checking You can easily specialize template (function, class, or both) so it will behave differently in specific case. Static functions cannot call instance functions. View Answer, 10. The following example shows using function print() to print different data types , When the above code is compiled and executed, it produces the following result . You could write several almost identical functions for each data type you want to support using function overloading. Which members are inherited but are not accessible in any case? View Answer, 13. Additionally, compiler will go through the same process of deducing T type as in the function template, so the same resolving constraints apply. How many types of polymorphisms are supported by C++? c) Constructors Overloaded functions and templates provide static (compile-time) polymorphism. 4. c) Distributive Function overloading is a mechanism of static polymorphism. d) Hierarchical Which operator is overloaded for a cout object? Which of the following are available only in the class hierarchy chain? Why references are different from pointers? Overloaded functions work just like an overloaded operators. b) << b) It reduces maintenance cost View Answer, 6. Static binding is another name for it. At the second call of custom_add(n, e), compiler first checks if it has made the proper function already.

Which of the following is correct in C++? All Rights Reserved. The one from before (custom_add( int , int )) does not quite fit to description. c) Both I and II Such determination happens via different methods at different time. C. Making at least one member function as virtual function. d) It reduced both testing and maintenance time

Abstract classes contain abstract methods, which are implemented by the derived class. First call of custom_add(p, i) invokes a creation of suitable function. Sanfoundry Global Education & Learning Series C++ Programming Language.

Compiler deduces input types (float, float), substitutes T with float, and succeeds in new function creation. However, C++ provides a better way to approach this task here is where function templates come to play. d) An object is an instance of the data type of the class Which concept means the addition of new components to a program as it runs? Which of the following is not a type of inheritance? I) In Procedural programming languages, all function calls are resolved at compile-time Dynamic polymorphism is implemented by abstract classes and virtual functions. How run-time polymorphisms are implemented in C++?

In this case, type of input value will be neglected which sometimes can lead to nasty hard-to-debug errors.

View Answer, 11. b) C++ allows dynamic type checking. It is also called static binding. d) Both private and protected During compile-time, a function and an object are linked, and this process is known as static polymorphism. Compiler takes given template void custom_add (T a, T b), substitutes T with given type int resulting in custom_add( int , int ), and the process goes smoothly. Since the algorithm is pretty basic, this function can be used with any built-in type, and with any custom data type (class) that supports + and << operators. b) An object is an instance of its class The two main types of polymorphism are run-time (implemented as inheritance and virtual functions), and compile-time (implemented as templates). Which of the following explains the overloading of functions? Now, you have a generalized class template which can be used for creation of many containers for different types of data, and a special case creating two_values instance with two char values will trigger unique behavior for custom_add() method. When a class is declared sealed, it cannot be inherited, abstract classes cannot be declared sealed. c) C++ allows static member function to be of type const. It might be hard to grasp, but examples will make understanding of the concept easier. d) Neither I nor II Which of the following is correct? Which of the following is not a type of inheritance? You can have multiple definitions for the same function name in the same scope. Types, Pointers, Arrays & Structures in C++, Functions, Namespaces & Exceptions in C++, Source Files, Classes & Operator Overloading in C++, Derived Classes, Templates & Exception Handling in C++, here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - C++ Programming Questions and Answers OOPs Concept 2, Next - C++ Programming Questions and Answers OOPs Concept 4, C++ Programming Questions and Answers OOPs Concept 4, C++ Programming Questions and Answers OOPs Concept 2, C++ Programming Questions and Answers OOPs Concept 1, Object Oriented Programming using C++ Questions and Answers OOPs Features, C++ Programming Questions and Answers Operator Overloading 1, Object Oriented Programming using C++ Questions and Answers Member Operator Function, C++ Programming Questions and Answers Operator Functions, C++ Programming Questions and Answers Function Call, C++ Programming Questions and Answers Operator Overloading 2, C++ Programming Questions and Answers Functors, Object Oriented Programming MCQ Questions, Dynamic Programming Problems and Solutions. Compiler searches for function with signature custom_add( int , int ), and uses the one that fits best. What is the other name used for functions inside a class? A. Declaring it abstract using static keyword. Compiler reports an error on compilation. c) It is not allowed d) Structure members are private by default Which of the following provides a programmer with the facility of using object of a class inside other classes? MCQ->Which of the following statements are correct about static functions? What happens if the base and derived class contains definition of a function with same prototype? d) Neither I nor II Putting type specifier when using a template function is not required, but is generally considered as a good practice. View Answer, 4. Copyright CuriousTab. To understand why, you need to look at the process of function creation in a step-by-step manner. Templates are powerful, but require some caution when using. Operator overloading, Function overloading, and Templates are the mechanisms of static polymorphism. Electronics and Communication Engineering. You cannot overload function declarations that differ only by return type. - Check GATE Apply Online Link, Dates & Procedure, GATE 2023 Admit Card Download - Release Date And Download Link, PSU Recruitment Through GATE 2022: Jobs, Eligibility, Selection Process, Indian Coast Guard Previous Year Question Paper. What happens if a class does not have a name.

c) It decreases the compilation time It works perfectly with numerical values, and even has a special behavior for non-numerical built-in types. Thereafter, the process is repeated for each overloaded function call. View Answer, 2. View Answer, 5. C# provides two techniques to implement static polymorphism.

Which of the following concepts provides facility of using object of one class inside another class. Wrapping data and its related functionality into a single entity is known as _____________. MCQ->Which of the following statement is correct about the program given below? Which of the following cannot be used with the keyword. milena lrde olena output

(Press Ctrl+g to toggle between English and the chosen language), Question Answer in malayalam-kerala-psc-questions, Multiple Choice Question in malayalam-kerala-psc-questions, Question Answer in kerala-psc-questions-in-malayalam, Multiple Choice Question in kerala-psc-questions-in-malayalam, Question Answer in India-general-knowledge-in-malayalam, Multiple Choice Question in mechanical-engineering-machine-design, Question Answer in kerala-general-knowledge-in-malayalam, Multiple Choice Question in java-programming-inner-classes, Multiple Choice Question in aptitude-surds-and-indices, Multiple Choice Question in current-affairs-2017-01-04, Multiple Choice Question in electronics-capacitors, Multiple Choice Question in electrical-engineering-series-parallel-circuits. a) A class is an instance of its objects Base class object will call base class function and derived class object will call derived class function. c) Both I and II Function overloading and Operator overloading are the two methods that C# offers to implement static polymorphism. c) Constant functions b) Public Agree a) I only D. Making at least one member function as pure virtual function. You can even define additional meaning for built-in operators to add support for your custom type(class). Compilers responsibility is to generate code for different input types based on instructions you gave. To practice all areas of C++ language, here is complete set of 1000+ Multiple Choice Questions and Answers. and also has a short definition of polymorphic class: A class that declares or inherits a virtual function is called a polymorphic class. With the first custom_add(c, e) call, compiler checks the type of input parameters (int , int ). The idea of overloading functions is pretty handy when you have to do slightly different things with different data types. b) By using an abstract keyword in front of a class declaration View Answer, 9. Instance functions can call static functions and access static data. C# allows you to create abstract classes that are used to provide partial class implementation of an interface. Only derived class function will get called irrespective of object. b) II only 5.

a) It reduces the testing time a) Friend functions can access public members of a class We discuss operator overloading in next chapter. b) II only 2. c) Protected Instead of creating several classes (each for each data type) you can easily apply the previous approach of creating generalized code using a class template. It is necessary to initialize static data. View Answer. However, the term polymorphism is used to characterize both compile-time and run-time type so often, that it is hard to avoid describing one or another. The following program demonstrates this , We make use of cookies to improve our user experience.

Which of the following concepts means adding new components to a program as it runs? Prev 1 2 3 4 5 6 7 8 9 10 11 12 Next, 2009 - 2022 by IndiaBIX Technologies. Which of the following statement is true?

Which statement is true about a static nested class? Computer Science Engineering Online Coaching, Computer Science Engineering Practice Set, How to Fill GATE 2023 Application Form?