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What is the use of the 'this' pointer in C++?It is used to refer to the current object of the classIt is used to declare static variablesIt is used to create a new objectIt is used to access the base class members

Question

What is the use of the 'this' pointer in C++?It is used to refer to the current object of the classIt is used to declare static variablesIt is used to create a new objectIt is used to access the base class members

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Solution

The 'this' pointer in C++ is used to refer to the current object of the class. It is a constant pointer that holds the memory address of the current object. 'this' pointer is not used to declare static variables, create a new object, or access the base class members.

Here's a step-by-step explanation:

  1. When a member function is called, a special pointer called 'this' is created. This pointer is passed as a hidden argument to the function.

  2. The 'this' pointer is available as a local variable within the body of all non-static functions.

  3. The 'this' pointer is used to refer to the calling object in a member function.

  4. It can be used to resolve scope in case of variable hiding.

  5. It can also be used to return the current object from a method.

  6. However, 'this' pointer is not used to declare static variables because static variables are shared by all objects of the class, not specific to any object.

  7. 'this' pointer is not used to create a new object. The 'new' keyword is used for this purpose.

  8. 'this' pointer is not used to access the base class members. The base class members are accessed using the scope resolution operator (::) or with the help of the base class name.

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