Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A: They present a degree of freedom in the interface design options.
Member functions & friend functions are equally privileged (100% vested). The major difference is that a friend function is called such as f(x), whereas a member function is called like x.f(). Therefore the ability to select between member functions (x.f()) and friend functions (f(x)) let a designer to choose the syntax that is deemed most readable, which lowers maintenance costs.
The major disadvantage of friend functions is that they need an extra line of code while you wished dynamic binding. In order to get the effect of a virtual friend, the friend function must call a hidden (usually protected) virtual member function. It is called the Virtual Friend Function Idiom. For instance:
class Base {
public:
friend void f(Base& b);
... protected:
virtual void do_f();
...
};
inline void f(Base& b)
{
b.do_f();
}
class Derived : public Base {
virtual void do_f(); // "Override" the behavior of f(Base& b)
void userCode(Base& b)
f(b);
In userCode(Base&) , the statement f(b) will invoke b.do_f(), that is virtual. It means that Derived::do_f() will get control actually if b is a object of class Derived. Note down that Derived overrides behavior of the protected virtual member function do_f(); this does not have its own variation of the friend function, f(Base&).
Compiler Design - Limit In The Method Instructions
exemples of many to many
The absolute land-speed record of 763.035 MPH (Mach 1.02) was set in October 15 1997 by a jet-powered car called Thrust SSC in the Black Rock Desert of northern Nevada. The team th
Given an integer n and a permutation of numbers 1, 2 ... , n-1, n write a program to print the permutation that lexicographically precedes the given input permutation. If the given
code for solving optimal solution for matrix
Default argument: When the argument is missing then the function will read the default value of the missing argument. To make use of default argument functionality the argu
to calculate area of the circle
It is standard on functions to provide some indication that the function has succeeded in its operation. Consider the Scanf function: scanf("%d",&number1); If the functio
Construct a console program to manage the booking of a Hotel room.
I want source code for class booking system by using C++ Programming...Urgent
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd