What is advantage and use of this pointer in C++?

What is advantage and use of this pointer in C++?

Pointers save the memory. Pointers reduce the length and complexity of a program. Pointers allow passing of arrays and strings to functions more efficiently. Pointers make possible to return more than one value from the function. Pointers increase the processing speed.

What is pointer advantage and disadvantage?

Pointers provide direct access to memory. Pointers provide a way to return more than one value to the functions. Reduces the storage space and complexity of the program. Reduces the execution time of the program. Provides an alternate way to access array elements.

What are the advantage of pointers in array?

Advantages of Pointer Pointers allows us to return more than one value from the functions. Reduces the execution time of the program. Pointers provide a way to perform dynamic memory allocation and deallocation.

What are the applications of this pointer?

In C++, this pointer is used to represent the address of an object inside a member function. For example, consider an object obj calling one of its member function say method() as obj. method(). Then, this pointer will hold the address of object obj inside the member function method().

What is use of this pointer Mcq?

Explanation: The pointer which denotes the object calling the member function is known as this pointer. The this pointer is usually used when there are members in the function with same name as those of the class members.

What is disadvantage of pointer?

Disadvantages of pointers:- 1)we can access the restricted memory area. 2) Pointers require one additional dereference, meaning that the final code must read the variable’s pointer from memory, then read the variable from the pointed-to memory. This is slower than reading the value directly from memory. 3).

What is advantage of pointer in C?

Advantages of Using Pointers Less time in program execution. Working on the original variable. With the help of pointers, we can create data structures (linked-list, stack, queue). Returning more than one values from functions. Searching and sorting large data very easily.

Which is better array or pointer?

The pointer can be used to access the array elements, accessing the whole array using pointer arithmetic, makes the accessing faster. Furthermore, the other difference lies between the implementation of the array and pointer where the array are implemented when the fixed size of the memory is allocated.

Why do we need pointers?

Pointers are used to store and manage the addresses of dynamically allocated blocks of memory. Such blocks are used to store data objects or arrays of objects. Most structured and object-oriented languages provide an area of memory, called the heap or free store, from which objects are dynamically allocated.

Why this pointer is used Mcq?

What is purpose of virtual destructor?

A virtual destructor is used to free up the memory space allocated by the derived class object or instance while deleting instances of the derived class using a base class pointer object.

Which is true about pointer?

Which of the following is true about this pointer? Explanation: The ‘this’ pointer is passed as a hidden argument to all non-static member function calls and is available as a local variable within the body of all non-static functions.

What are the advantages of using a pointer?

What are the Advantages of Pointers · Pointer is a variable which stores the add of another variable. · Pointer contain memory address as their value. · Pointers can be used to access & manipulate data stored in the memory. 1. pointers are more efficient in handling arrays & data tables.

How are pointers used in a C program?

Therefore, in C we use pointer as a reference. (vi) Storage of strings through pointers saves memory space. (vii) Pointers may be used to pass on arrays, strings, functions, and variables as arguments of a function.

How are pointers used to store a string?

(vi) Storage of strings through pointers saves memory space. (vii) Pointers may be used to pass on arrays, strings, functions, and variables as arguments of a function.

Why are pointers used to pass on arrays?

(viii) Passing on arrays by pointers saves lot of memory because we are passing on only the address of array instead of all the elements of an array, which would mean passing on copies of all the elements and thus taking lot of memory space. (ix) Pointers are used to construct different data structures such as linked lists, queues, stacks, etc.

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