Answer :
Answer:
A C++ program was used in creating two classes. the code is stated below.
Explanation:
Solution
The C++ program is executed below:
#include<iostream>
using namespace std;
//declare class (will be define later)
class Salesperson;
//class Sale
class Sale
{
//private members of class
private:
string day;
double amtOfSale;
int salesPersonId;
//public methods
public:
//constructor that takes day,amount of sale and salesPersonId as parameters
Sale(string date,double sale,int id)
{
//set the private members to the initial values passed
day=date;
amtOfSale=sale;
salesPersonId=id;
}
//declare a friend function that takes objects of the two classes as parameters
friend void display(Sale,Salesperson);
};
//define class Salesperson
class Salesperson
{
//private members of the class
private:
int salesPersonId;
string lastName;
//public methods
public:
//constructor that takes name and id as parameters
Salesperson(int id,string name)
{
//set the members of the class with the parameters passed
salesPersonId=id;
lastName=name;
}
//declare a friend function that takes objects of the two classes as parameters
friend void display(Sale,Salesperson);
};
//define the friend funtion
void display(Sale saleObj,Salesperson personObj)
{
//display the sales info using the objects of the two classes
cout<<"\nSale #"<<saleObj.salesPersonId<<" on "<<saleObj.day<<" for $"<<saleObj.amtOfSale<<" sold by #"<<personObj.salesPersonId<<" "<<personObj.lastName;
}
int main()
{
//create object for Sale class and pass default values
Sale sObj1("12/25/2016",559.95,103);
//create object for Salesperson class and pass default values
Salesperson pObj1(103,"Woods");
//create another object for Sale class and pass default values
Sale sObj2("11/15/2016",359.95,106);
//create another object for Salesperson class and pass default values
Salesperson pObj2(106,"Hansen");
//using the friend function dislay the sales info
display(sObj1,pObj1);
display(sObj2,pObj2);
return 0;
}