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- oop using c++ please give me full answer thanks Write a Program that implements Base class calculator and a Derived class scientific calculator, The Derived class should take the basic operations i.e. add, divide, subtract from calculator. However it should have its own methods such as square root.C++ simple friend function.Create a C++ class called cube that calculates the volume of a cube. Use appropriate accessors (getters) and mutators (setters), constructors, etc. Your program must also include a friend function that will sum the volume of two cube class instances.Output the individual volumes of each of the two cube classes and then the total volume from the friend function. Example of friend funtion #include <iostream> using namespace std; class Box { double width; public: friend void printWidth( Box box ); void setWidth( double wid );}; // Member function definitionvoid Box::setWidth( double wid ) { width = wid;} // Note: printWidth() is not a member function of any class.void printWidth( Box box ) { /* Because printWidth() is a friend of Box, it can directly access any member of this class */ cout << "Width of box : " << box.width <<endl;} // Main function for the programint main() { Box box; // set box width…C++ Personal Information Class: Design a class that holds the following personal data: name, age, and phone number. Write appropriate accessor and mutator functions. Demonstrate the class by writing a program that creates three instances of it. One instance should hold your information, and the other two should hold your friend's or family member's information.
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- c++ Friend function concepts Do not use operator overloading Create a class Circle with member variable radius R of type float. Create a constructor for assigning value to R and a method "int compare(Circle c)" for comparing the radii. In main method, create two objects of Circle and compare their radii and display which one is biggerC++ #include <iostream>using namespace std; //creating struct to hold //student name,age and letter gradestruct student{ //data members string name; int age; char grade;};int main(){ //declaring object for the struct student *k = new student; //filling it with data k->name = "Kate"; k->age=24; k->grade='B'; ///then printing student data cout<<"Name:"<<k->name<<endl; cout<<"Age:"<<k->age<<endl; cout<<"Grade:"<<k->grade<<endl; return 0;}c++ oop Write a program that creates a class called Number. Your class will have two data membersnamely num (float) and result (int). To find the factorial of the entered number you will need todesign three functions as follows: Function to determine if a number is a whole number or not Function to determine if the number is positive or not Function to find the actual factorial Function to display the number and its factorial (Must be constant function) All these required function should be class’s functionRemember that to find the factorial, the number must of positive and a whole number. So if anyof these conditions are not met then you cannot determine the factorial.