25 Lecture - OVERLOADING VS. OVERRIDING

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25 Lecture

CS304

Midterm & Final Term Short Notes

OVERLOADING VS. OVERRIDING

Overloading and overriding are both concepts in object-oriented programming that involve the use of functions in classes. Overloading refers to creating multiple functions with the same name but different parameters, while overriding refers to r


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  1. What is overloading in object-oriented programming? a. Creating multiple functions with the same name but different parameters b. Redefining a function in a subclass that was originally defined in a superclass c. Both a and b Answer: a What is overriding in object-oriented programming? a. Creating multiple functions with the same name but different parameters b. Redefining a function in a subclass that was originally defined in a superclass c. Both a and b Answer: b Can overloaded functions have the same number of parameters? a. Yes b. No Answer: Yes Can overloaded functions have the same name and parameters? a. Yes b. No Answer: No Can overridden functions have the same name and parameters? a. Yes b. No Answer: Yes Is overloading static or dynamic polymorphism? a. Static b. Dynamic Answer: Static Is overriding static or dynamic polymorphism? a. Static b. Dynamic Answer: Dynamic Can overloading be done in the same class? a. Yes b. No Answer: Yes Can overriding be done in the same class? a. Yes b. No Answer: No What happens if an overridden function is called on an object of the subclass? a. The function defined in the superclass is called b. The function defined in the subclass is called c. Both functions are called Answer: b



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Midterm & Finalterm Prepration
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  1. What is overloading and overriding in object-oriented programming? Answer: Overloading refers to creating multiple functions with the same name but different parameters, while overriding refers to redefining a function in a subclass that was originally defined in a superclass. What is the difference between overloading and overriding? Answer: Overloading is creating multiple functions with the same name but different parameters, while overriding is redefining a function in a subclass that was originally defined in a superclass. What is the purpose of overloading in object-oriented programming? Answer: Overloading allows a function to perform different tasks based on the parameters it is called with. What is the purpose of overriding in object-oriented programming? Answer: Overriding allows a subclass to provide a different implementation of a function defined in the superclass. Is overloading static or dynamic polymorphism? Answer: Overloading is an example of static polymorphism. Is overriding static or dynamic polymorphism? Answer: Overriding is an example of dynamic polymorphism. Can overloaded functions have different return types? Answer: Yes, overloaded functions can have different return types as long as their parameter lists differ. Can overridden functions have different return types? Answer: No, overridden functions must have the same return type as the function they are overriding. Can overloaded functions have different access modifiers? Answer: Yes, overloaded functions can have different access modifiers. Can overridden functions have different access modifiers? Answer: No, overridden functions must have the same access modifier as the function they are overriding.

In object-oriented programming, two important concepts are overloading and overriding. Overloading refers to the ability to define multiple functions with the same name, but with different input parameters. When a function is overloaded, the compiler uses the arguments passed in to determine which version of the function to call. This allows the programmer to create functions that can handle different data types or perform different operations based on the number or types of arguments passed in. On the other hand, overriding is the ability to provide a new implementation for an existing function that is defined in a base class. This allows subclasses to provide their own version of a function inherited from the base class, and allows the behavior of the function to be customized to the needs of the subclass. Overloading and overriding are both examples of polymorphism, which is the ability of objects of different types to be used interchangeably. Overloading is an example of static polymorphism, because the compiler determines which version of the function to call at compile time based on the arguments passed in. Overriding is an example of dynamic polymorphism, because the decision about which version of the function to call is made at runtime based on the type of object being used. In summary, overloading allows a function to be called with different parameters, while overriding allows a subclass to customize the behavior of an inherited function. Both concepts are important tools for creating flexible and reusable code in object-oriented programming.

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