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Because this points to the current object, but static methods don't have a current object (actually this is definition of the static methods).
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How you declare class scoped variables and member functions?
To scope class members to the class (rather than to instances of the class), declare them as static members of the class. Static members are accessible even when no instances of the class exist. As such, static member functions do not have access to a 'this' pointer, unlike ordinary (nonstatic) member functions.
What are the application of this pointer can you use this pointer in friend function justify?
The this pointer can only be used within nonstatic member functions. Friend functions are not members so they have no access to a this pointer. However, you can pass a specific instance of a class to a function via a class reference argument. To understand how friendship works, first understand that a nonstatic member function has the following properties: 1. It has private access to the class. 2. It is scoped to the class. 3. It must be invoked upon an object of the class (has a this pointer). Static member functions have the first two properties while friend functions only have the first property.
When does this pointer get created?
When we call non static method with respect to class object then this pointer is created which keep the reference of that object.
What is 'this' in c?
There is no 'this' in C. C is not an object-oriented language. C++, however, is object-oriented. The 'this' pointer is used by non-static member functions to determine which instance of a class the function should operate upon.
How does virtual function support run time polymorphism?
Virtual functions are used to suport runtime polymorphism.In C++,if we have inheritance and we have overridden functions in the inherited classes,we can declare a base class pointer and make it to point to the objects of derived classes.When we give a keyword virtual to the base class functions,the compiler will no do static binding,so during runtime ,the base class pointer can be used to call the functions of the derived classes.Thus virtual functions support dynamic polymorphism.
Why is it not advisable to use this pointer with static members?
It is not inadvisable, it is impossible. Static member methods do not have access to a this pointer since they are not associated with any instance. Static members are scoped to the class, not to an object (an instance of the class). Only instance members have access to the this pointer.
What is the Use of static function?
A static function is a member function that is not associated with any instance of the class; it has no this pointer.
How you declare class scoped variables and member functions?
To scope class members to the class (rather than to instances of the class), declare them as static members of the class. Static members are accessible even when no instances of the class exist. As such, static member functions do not have access to a 'this' pointer, unlike ordinary (nonstatic) member functions.
What are the application of this pointer can you use this pointer in friend function justify?
The this pointer can only be used within nonstatic member functions. Friend functions are not members so they have no access to a this pointer. However, you can pass a specific instance of a class to a function via a class reference argument. To understand how friendship works, first understand that a nonstatic member function has the following properties: 1. It has private access to the class. 2. It is scoped to the class. 3. It must be invoked upon an object of the class (has a this pointer). Static member functions have the first two properties while friend functions only have the first property.
Why static functions cannot use instant variables?
Static functions are tied to a class, not to a particular object. A static function can only access static variables because it has no knowledge of member variables.
What is use of static functions in c in terms of memory?
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What is diffrent between object pointer and this pointer?
'this' is an object-pointer: it points to the current object (usable only in non-static methods).
When does this pointer get created?
When we call non static method with respect to class object then this pointer is created which keep the reference of that object.
What is 'this' in c?
There is no 'this' in C. C is not an object-oriented language. C++, however, is object-oriented. The 'this' pointer is used by non-static member functions to determine which instance of a class the function should operate upon.
How does virtual function support run time polymorphism?
Virtual functions are used to suport runtime polymorphism.In C++,if we have inheritance and we have overridden functions in the inherited classes,we can declare a base class pointer and make it to point to the objects of derived classes.When we give a keyword virtual to the base class functions,the compiler will no do static binding,so during runtime ,the base class pointer can be used to call the functions of the derived classes.Thus virtual functions support dynamic polymorphism.
By default functions will be the static storage class?
No, you have to make them static explicitly.
Can this pointer be used within the concept of the static method?
No. When a method is declared static, it is defined outside of any individual class reference.
