// Lesson 2 files
// Andrew Fountain http://quadruple.ca
//
// overload.cpp
#include <iostream>
using namespace std;

void f(const char *g);
void f(void);

void f(const char *g) { cout << "Hello, " << g << "!" << endl; }
void f(void) { cout << "Welcome to Paradise!" << endl; }

int main(int argc, char *argv[]) {
	f("Student");
	f();
	return 0;
}

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

int x = 22;	//global x;

int main(int argc, char *argv[]) {
	cout << "x = " << x << endl;
	{
		int x = 57;	//local x;
		cout << "x = " << x << endl;
	}
	cout << "x = " << x << endl;
	return 0;
}

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

void swap(int& reftox, int& reftoy);

int main(int argc, char *argv[]) {
	int x=1, y=2;
	cout << "Before calling swap, x=" << x << " and y=" << y << endl;
	swap(x,y);
	cout << "Before calling swap, x=" << x << " and y=" << y << endl;
}
void swap(int& reftox, int& reftoy) {
	int temp;
	temp = reftoy;
	reftoy = reftox;
	reftox = temp;
}

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

int main(int argc, char *argv[]) {
	char *helloworld = "Hello, world!";
	cout << "My string is (" << helloworld << ")" << endl;
	cout << "The length of the string is " << strlen(helloworld) << endl;
}

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

int main(int argc, char *argv[]) {
	string helloworld("Hello, world!");
	cout << "My string is (" << helloworld << ")" << endl;
	cout << "The length of the string is " << helloworld.length() << endl;
}

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

int main(int argc, char *argv[]) {
    char pcarray[15];
    strcpy(pcarray,"Hello, worlds!");
    char * const cpc = pcarray;
    const char * pcc = pcarray;
    char const * pcc2 = pcarray;
    const char * const cpcc = pcarray;
    *cpc = 'J';
    pcc = "can you move me?";
    pcc2 = "can you move me too?";
    cout << "cpc is (" << cpc << ")" << endl;
    cout << "pcc is (" << pcc << ")" << endl;
    cout << "pcc2 is (" << pcc2 << ")" << endl;
    cout << "cpcc is (" << cpcc << ")" << endl;
}