// Lesson 3 files
// Andrew Fountain http://quadruple.ca
//
// ex34.h
#include <iostream>
using namespace std;

class person {
private:
	int age;
	long ssn;
public:
	long getssn(void) { return ssn; }
	void setssn(void) { cin >> ssn; }
};

// ex34.cpp
#include "ex34.h"

int main(int argc, char *argv[]) {
	person p;
	cout << "Enter your SSN:";
	p.setssn();
	cout << "P's SSN is " << p.getssn() << endl;
}

//--------------------------------------------MODIFIED
// ex34.cpp
#include "ex34.h"

int main(int argc, char *argv[]) {
	person p;
	cout << "Enter your SSN:";
	p.setssn();
	cout << "P's SSN is " << p.getssn() << endl;

	person * pptr = new person;
	cout << "Enter the SSN for the pointed-to person:";
	pptr -> setssn();
	cout << "The SSN of the pointed to person is " << pptr->getssn() << endl; //or (*pptr).getssn()
	delete pptr;
}

///////////////////////////////////////////////////////////////////////////
// ex35.h
#include <iostream>
using namespace std;

class ShortClass {
private:
	int age;
public:
	ShortClass() { age = 75 ; doit(); }
	void doit(void) { cout << "The ShortClass' age is " << age << endl; }
};

class LongClass {
private:
	int age;
public:
	LongClass();
	void doit(void) ;
};

// ex35.cpp
#include "ex35.h"

int main(int argc, char *argv[]) {
	ShortClass theShort;
	LongClass theLong;
}

//--------------------------------------------MODIFIED
// ex35.cpp
#include "ex35.h"
LongClass::LongClass() { age = 75; doit(); }
void LongClass::doit(void) {
	cout << "The LongClass' age is " << age << endl; 
}

int main(int argc, char *argv[]) {
	ShortClass theShort;
	LongClass theLong;
}

///////////////////////////////////////////////////////////////////////////
// ex36.h
#include <iostream>
using namespace std;

class person {
protected:
	int age;
	long ssn;
public:
	person(int a): age(a) {
		cout << "One-arg person with age of " << age << endl;
	}
	person(int a, long s): age(a), ssn(s) {
		cout << "Two-arg person" << endl;
	}
};

// ex36.cpp
#include "ex36.h"

int main(int argc, char *argv[]) {
	person one(30); person two(28,719045712);
}

//--------------------------------------------MODIFIED
// ex36.h
#include <iostream>
using namespace std;

class person {
protected:
	int age;
	long ssn;
public:
	person() {
		cout << "Age is " << age << ", SSN is " << ssn << endl;
	}
	person(int a): age(a) {
		cout << "One-arg person with age of " << age << endl;
	}
	person(int a, long s): age(a), ssn(s) {
		cout << "Two-arg person" << endl;
	}
};

// ex36.cpp
#include "ex36.h"

int main(int argc, char *argv[]) {
	person none;
	person one(30); person two(28,719045712);
}

///////////////////////////////////////////////////////////////////////////
// ex37.cpp
#include <iostream>
using namespace std;

int * GlobalIPTR;

class Foo {
private:
	int * iptr;
public:
	Foo() {
		iptr = new int;
		GlobalIPTR = iptr;
		cout << "Enter an integer: " << endl;
		cin >> *iptr;
	}
	void localptr() {
		cout << "Local pointer points to " << *iptr << endl;
	}
};

int main(int argc, char *argv[]) {
	Foo * f = new Foo;
	f->localptr();
	delete f;
	cout << "Object 'f' has been deleted" << endl;
	f->localptr();
}
//--------------------------------------------MODIFIED
cout << "Global Pointer points to " << *GlobalIPTR << endl;
~Foo() { delete iptr; }

///////////////////////////////////////////////////////////////////////////
// ex38.cpp
#include <iostream>
using namespace std;

int * GlobalIPTR;

class Worker {
private:
	float salary;
public:
	Worker() : salary(25.00) {
		showSalary();
	}
	void showSalary() {
		cout << "The worker's salary is: " << salary << endl;
	}
};

class Manager {
public:
	void changeSalary(Worker& w) {
		w.salary *= 1.1f;
	}
	Manager() {}
};

int main(int argc, char *argv[]) {
	Worker theWorker;
	Manager theManager;
	theManager.changeSalary(theWorker);
	theWorker.showSalary();
}
//--------------------------------------------MODIFIED
friend class Manager;