/*
 * pointref.cpp
 *
 *  Created on: 29.11.2012
 *      Author: trifon
 */

#include <iostream>
#include <cmath>
using namespace std;

int main1()
{
	int x = 5, *p = &x, *q = p, y = *p + 2;
	cout << p << ' ' << q << endl;
	cout << *p << ' ' << *q << endl;
	cout << &p << ' ' << &q << endl;
	*p = 8;
	cout << *p << ' ' << *q << ' ';
	cout << x << ' ' << y << endl;
	(*p)++;
	// не е същото като! *(p++) <--> *p++
	cout << *p << endl;
	p = &y;
	cout << *p << ' ' << *q << ' ';
	cout << x << ' ' << y << endl;
	*q = 1;
	cout << *p << ' ' << *q << ' ';
	cout << x << ' ' << y << endl;
	*p = *q; // y = x
	cout << *p << ' ' << *q << ' ';
	cout << x << ' ' << y << endl;

	double z = 1.23, *r = &z;

	cout << p << ' ' << p + 2 << endl;
	cout << r << ' ' << r + 2 << endl;

	void* s;
	// void* <- int*
	s = p;
	s = q;
	s = &x;
	// void* <- double*
	s = &z;
	s = r;

	// void* <- ?*

	s = &r;  // void* <- double**
	s = &s;  // void* <- void**

	s = p;
	cout << *(int*)s << endl;

	s = &z;
	cout << *(double*)s << endl;

	cout << *(int*)s << endl;

	double* t = (double*)s;

	cout << *t << endl;


	cout << s << ' ' << s + 2 << endl;

	cout << *(double*)p << endl;

	const int a = 8;
	cout << &a << endl;
	cout << *(&a) << endl;
	// !!! *(&a) = 5;
    //!!! p = &a;	*p = 2;

	int * const cp = p;
	cout << *cp << endl;
	*cp = 10;
	cout << *cp << endl;
	/// !!!!! cp = q;

	int const* pc = &x;
	x = 20;
	// !!! *pc = 20;
	*q = 20;
	pc = p;
	// !!! *pc = 40;
	pc = &a;
	// !!! p = pc;
	p = (int*)pc;
	*p = 10;
	cout << a << endl;

	int const* const cpc = &a;
	//!!! *cpc = 5;
	//!!! cpc = pc;

	int arr[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
	//arr = &x;
	//arr++;
	//arr--;
	//arr = arr + 2;
	cout << *arr << endl;
	cout << *(arr+4) << endl;
	*(arr+6) = 60;
	cout << arr[6] << endl;

	cout << 6[arr] << endl;

	p = arr;
	//x = a;
	while (*p < 10)
	{
		cout << *p++ << ',';
	}
	cout << *p << endl;

	int b[2][2][3] =
		{
				{
						{1,2,3},
						{4,5,6}
				},
				{
						{7,8,9},
						{10,11,12}
				}
		};

	cout << b << endl;
	cout << b[0] << ' ' << b[1] << endl;
	cout << b[0][0] << ' ' << b[0][1] << endl;
	cout << b[1][0] << ' ' << b[1][1] << endl;

	cout << b + 1 << ' ' << *(b + 1) << endl;

	for(int i = 0; i < 2; i++)
		for(int j = 0; j < 2; j++)
			for(int k = 0; k < 3; k++)
				//cout << *(*(*(b + i)+j)+k) << endl;
				cout << b[i][j][k] << endl;

	char str[] = "Hello, world!";
	char* ps = str;
	while (*ps)
		cout << *ps++ << ' ';
	cout << endl;
	do {
		cout << *--ps << ' ';
	} while (ps != str);
	// ps == str
	cout << endl;
	cout << (void*)ps << ' ' << (void*)str << endl;
	while (*ps) {
		cout << *ps << ' ';
		ps += 2;
	}

	cout << "abc" << endl;

	char const* strc = "Hello, world!";
	cout << strc;
	char* strp = "Hi C++!";
	cout << strp;
	strp[1] = 'o';

	return 0;
}

int main()
{
	int x = 3;
	int &a = x, b = a;
	int &c = b;
	a = c + 5;
	b = 2;
	x = 10;
	int &d = c;
	d = 5;
	return 0;
	cout << a << ' ' << x << endl;
	cout << b << ' ' << c << ' ' << d << endl;
}

int main2()
{
	int x = 3;
	int * const pa = &x, b = *pa;
	int * const pc = &b;
	// !!!!! pa = pc + 5;
	*pa = *pc + 5;
	b = 2;
	x = 10;
	// !!! pa = &b;
	// !!! pc = &x;
	cout << *pa << ' ' << x   << endl;
	cout << b   << ' ' << *pc << endl;
	return 0;
}

int f();
int f();
int f();
int f();
int f();
int f();

int g() {
	return f();
}

int f() {
	return g();
}


int test();

int test2() {
//!!!	return test();
}