Nested member functions

In C++, it is also possible to call a member function within another member function. This is called nested member functions.

In general, an object of a class can call any member functions of that class using dot operator. When we used nested functions, a function is calling inside another function and do not need the object name.

A member function can directly call another function of the class without object.

Example:

#include<iostream.h>

#include<conio.h>

class sample

{

private:

int a,b;

public:

void getdata()

{                       

cout<<"Enter a and b values : "; cin>>a>>b;

}

int total()

{

return a+b;

}

float avg()

{

return total()/2.0;

}

void show()

{

cout<<"Total     : "<<total()<<endl;

cout<<"Average : "<<avg()<<endl;

}

};

void main()

{

clrscr();

sample s;

s.getdata();

s.show();

getch();

}

In the above program, data members of the class are directly accessed by the member functions. Member functions do not need the dot(.) operator to use data members. Similarly when we call a member function from another member function, we do not need the object name of the object or the dot(.) operator. The member function can be directly called by using its name along with arguments.