Static Function C

It is initialized only once.

Static function c. Therefore when we want to restrict access to functions we make them static. Like static data members you may access a static member function f of a class a without using an object of class a. Static member functions do not work on an object so the this pointer is not needed. Second static member functions can directly access other static members variables or functions but not non static members.

It is not associated with any class object. Static member functions c only you cannot have static and nonstatic member functions with the same names and the same number and type of arguments. A static member function does not have a this pointer. Static member functions cannot be virtual const or volatile.

Static functions in a class. This means that the static function is only visible in its object file. A function can be declared as static function by placing the static keyword before the function name. A static function in c is a function that has a scope that is limited to its object file.

Static member functions are not associated with any object. You could use a static member function to determine whether some objects of the class have been created or not. Static variables are initialized to 0. A static member function can only access static data member other static member functions and any other functions from outside the class.

Throughout the program only one copy of the static member variable is created for the entire class hence static member. When called they have no this pointer. For example below function fun is static. An example that demonstrates this is given as follows.

The static member variable is only visible within the class but its lifetime is till the program ends. Just like static data member static member function is also a class function. This is because non static members must belong to a class object and static member functions have no class object to work with. Just like the static data members or static variables inside the class static member functions also does not depend on object of class.

The static keyword before a function name makes it static. We are allowed to invoke a static member function using the object and the operator but it is recommended to invoke the static members using the class name and the scope resolution operator. Unlike global functions in c access to static functions is restricted to the file where they are declared. Let us try the following example to understand the concept of static function members.