/*
 * This program makes use of a trivial C++ class in order to point out
 * some basic syntax and other issues.
 */

#include <iostream>
#include <string>

using namespace std;

/*
 * This class represents an integer value with a label for printing.
 */
class LabeledInt {
public:
	// Create an object.
	LabeledInt(string label, int value = 0) {
		m_label = label;
		m_value = value;
	}

	// Get the labeled value for easy printing
	string to_string() const {
		return m_label + ": " + std::to_string(m_value);
	}
	
	// Change the label.
	void relabel(string label) { m_label = label; }

	// Get or set the value.
	int get() const { return m_value; }
	void set(int value) { m_value = value; }
private:
	string m_label;
	int m_value;
};

void munge(LabeledInt ll)
{
	ll.relabel("Nothing");
	ll.set(0);
}

void set(LabeledInt & ll)
{
	ll.relabel("something");
	ll.set(99);
}

int main()
{
	// Make some.
	LabeledInt li1("Peanuts", 487);
	LabeledInt li2("Acorns", 9871);
	LabeledInt li3("Marbles");

	// Print them.
	cout << "A " << li1.to_string() << ", " << li2.to_string() << ", "
	     << li3.to_string() << endl;

	// Some pretty random changes.
	li1.set(li1.get() + 13);
	li3.set(17);
	li2.set(li3.get() * li1.get());

	// Print them.
	cout << "B " << li1.to_string() << ", " << li2.to_string() << ", "
	     << li3.to_string() << endl;

	// Compare to Java.
	LabeledInt cpy = li1;
	li1.set(3);
	li1.relabel("Pebbles");
	li2 = li3;
	li2.set(3*li2.get());

	// Print them.
	cout << "C " << li1.to_string() << ", " << li2.to_string() << ", "
	     << li3.to_string() << ", " << cpy.to_string() << endl;

	// Note that each function uses a different parameter passing method.
	munge(li1);
	set(li2);

	// Print them.
	cout << "D " << li1.to_string() << ", " << li2.to_string() << ", "
	     << li3.to_string() << endl;
}