Question

  

i am taking a c++ class. please answer these four question detailedly.

thank you in advance.

Know how to do the tracing problems with classes, aka BaskinRobbins type problem What are some of the benefits to Object Oriented programming? What do the concepts of object reusability and data hiding mean? How do you access a data member of a structure/class? How do you pass an array to a function?

Answer 1

Q1. Benefits of Object Oriented Programming:

Object Oriented Programming provides a clear structure.
Object Oriented Programming helps us to create datatypes of our own choice with a feature to hide details that you don't want to show to your user.
Objects in Object Oriented Programming are reusable. This reuse ability helps us to lower the development cost.
Object Oriented Programming structure is easier to maintain, it is fast.
Object Oriented Programming is used to define abstract data types.

Q2. Object Reusability:
It is quiet expensive to create an object every time we need it increases our cost and consume our time. However the object reuse ability helps us to reuse the object you created earlier for further use. It means that the class to which the object is belonged will be created and debugged only for once and will be distributed to that program in which the object was created earlier

Data Hiding:

  Data hiding is a technique which we use in Object oriented programming to hide the data members or some functions from outside the class this technique won't let other classes or functions to access those members or functions that are hidden. Data hiding technique is used to only show functions or data members which are needed to show to user this avoid complexity to the user as he have no concern that what goes in backend.

Q3. Access data members of a structure/class:

Only data members which are public can be accessed of a class or a struct by default struct is public and by default class is private. To access the data members we have to create an object of that struct or class and that object is based on what constructor we have made for that struct or class by default struct and class has a built in constructor but they can also have a parameterize constructor. After declaring the object if it's a pointer base object we can access them by using a " -> " symbol this symbol is used to access pointer type objects and for simple objects we use " . " dot operator to access data members. Protected members can also be accessed outside the class.

Q4. Passing array to a function:

There are few ways to pass an array to a function like by reference , by value or by pointer. By reference we pass array to a function by sending its address of first index. By pointer we sent an array of pointer into a function and the pointer is pointing to the first index of the array and by value we just pass the array to the function and it begins with the first index.

void fun(int [ ], int size);

void fun (int(&)[size ]);

void fun( int * ,int size);

These are some ways to pass an array to a function

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