How do you access class data members using this pointer?

We can define pointer of class type, which can be used to point to class objects. Here you can see that we have declared a pointer of class type which points to class’s object. We can access data members and member functions using pointer name with arrow -> symbol.

Can we access array using pointer?

The elements of 2-D array can be accessed with the help of pointer notation also. Suppose arr is a 2-D array, we can access any element arr[i][j] of the array using the pointer expression *(*(arr + i) + j).

Can a pointer point to an array C++?

We know a pointer variable stores the address of another variable and can be used to access that variables data. Similarly a pointer can also point to an array. That is, a pointer can also be used to access all the values of an array.

How do you call a members function using pointer?

Using a pointer-to-member-function to call a function The syntax looks like you are preceding the dereferenced pointer with an object member selection (the “dot” operator) or object pointer selection (the “arrow” operator). Calling the member function on an object using a pointer-to-member-function result = (object.

How can I access a class member?

Accessing data members and member functions: The data members and member functions of class can be accessed using the dot(‘. ‘) operator with the object. For example if the name of object is obj and you want to access the member function with the name printName() then you will have to write obj. printName() .

What is this pointer with example?

The this pointer is a pointer accessible only within the nonstatic member functions of a class , struct , or union type. It points to the object for which the member function is called. Static member functions don’t have a this pointer.

What is pointer to array explain with example?

Pointer to an array is also known as array pointer. We are using the pointer to access the components of the array. int a[3] = {3, 4, 5 }; int *ptr = a; We can likewise declare a pointer that can point to whole array rather than just a single component of the array. …

What is the relationship between an array and a pointer C++?

Arrays and pointers are synonymous in terms of how they use to access memory. But, the important difference between them is that, a pointer variable can take different addresses as value whereas, in case of array it is fixed. In C , name of the array always points to the first element of an array.

What will happen if in a C++ program a class has no name?

Explanation: In the C++ program, if we use a class without assigning a name. As a result, it will not be going to have a destructor, but it will have the object.

Why this pointer is used?

How to access an array using a pointer in C?

C Program to Access Elements of an Array Using Pointer. This program declares the array of five element and the elements of that array are accessed using pointer. To understand this example, you should have the knowledge of following C programming topics: C for Loop.

How to pointer to data members in C + +?

Pointer to Data Members of Class. We can use pointer to point to class’s data members (Member variables). Syntax for Declaration : datatype class_name :: *pointer_name; Syntax for Assignment: pointer_name = &class_name :: datamember_name; Both declaration and assignment can be done in a single statement too.

Is there a pointer to a member of a class?

Just like pointers to normal variables and functions, we can have pointers to class member functions and member variables. Let’s see how this works. We can define pointer of class type, which can be used to point to class objects.

How to access an element of an array in C + +?

C++ Program to Access Elements of an Array Using Pointer. Pointers store the memory location or address of variables. In other words, pointers reference a memory location and obtaining the value stored at that memory location is known as dereferencing the pointer. A program that uses pointers to access a single element of an array is given as