CSI 250L Lab 6, Spring 2012

American University of Science & Technology Department Of Computer Science CSI 250L – Computer Programming-II Lab Spring 2011/2012 Lab Work 6 Problem1: Trace the following program: a- #include <string> #include <iostream> using namespace std; class Car { private: int wheels; string brand; static int count; public: Car(int, string); int getCount(); int getWheels(); string getBrand(); void setWheels(int); void setBrand(string); }; int Car::count = 0; Car::Car(int c, string b) { setWheels(c); setBrand(b); count++; } int Car::getCount() { return count; } int Car::getWheels() { return wheels; } string Car::getBrand() { return brand; } void Car::setWheels(int w) { wheels = w; } void Car::setBrand(string b) { brand= b ; } int main(){ string b1 = "Honda",b2 = "Toyota"; Car c1(4, b1); Car c2(3, b2); cout<<"c1 values are : " << c1.getWheels() << " - " << c1.getBrand()<<endl; cout<<"c2 values are : " << c2.getWheels() << " - " << c2.getBrand()<<endl; cout<<"Car count when using c1: " << c1.getCount()<<endl; c2 = c1; c2.setBrand(c1.getBrand()); c1.setBrand("bmw"); c1.setWheels(3); c1.setBrand(c2.getBrand()); 1 cout<<"Wheels : " << c2.getWheels()<<endl; cout<<"c1 values are : " << c1.getWheels() << " - " << c1.getBrand() << endl; cout<<"c2 values are : " << c2.getWheels() << " - " << c2.getBrand() << endl; cout<<"Car count when using c2: " << c2.getCount()<<endl; system("pause"); return 0; } Problem 2: Write the class definitions and implementations for the following class specification. (use separate files for the class definition and implementation). Supplier Attributes  ID: a number to identify each supplier.  name: a string of characters for the supplier’s name.  Country: a string of characters for the supplier’s location. Methods  constructors (default values)  print.  destructor.  Set and get Write a driver program create N objects of the class Supplier. Then the user should choose from the following menu: 1. Display the name of a supplier knowing his ID. 2. List the information about all suppliers located in USA. 3. Exit. Problem 3 : 2 Write the class definitions and implementations for the following class specification. The class definition and implementation should be written in a separate file. ComEmployee Attributes  Name: a string to identify the name. (dynamic allocation)  grossSales: a double to identify the gross sales  commissionRate: a double representing a percentage  count: static variable to count the instantiated objects. . Methods  default constructor and all arguments constructor.  set and get methods  print.  Destructor BasePlusComEmployee Attributes  baseSalary: a double representing the base salary  ComEmployee is the composed object Methods  default constructor and all arguments constructor.  print: a constant function.  set and get functions.  earnings: compute the earnings as baseSalary + (commissionRate * grossSales) The program should do the following:  Output the total earnings of all employees.  Output the names of all employees with gross sales >10000. 3