// console_pointers.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;


int Soucet (int a, int b)
{
	return (a+b);
};

int Rozdil (int a, int b)
{
	return (a-b);
};


int _tmain(int argc, _TCHAR* argv[])
{
	// ukazatel na promennou
	int* pNumber = NULL; //vytvori ukazatel - defaultni hodnota je NULL
	int number = 100;
	pNumber = &number; //Priradi mu adresu promenne number
	cout <<"Promenna number ma hodnotu " << number
		 << " a jeji adresa je " << &number <<endl;

	cout <<"Promenna pNumber ma hodnotu " << pNumber
		 <<" a jeji adresa je " <<&pNumber
		 <<"\nA hodnota v promenne na kterou ukazuje je "
		 <<*pNumber << endl;

	//ukazatel na funkci
	int fce;
	int i, j;
	int (*Pfce)(int, int); // deklarace ukazatele na fci - (*Pfce) musi byt v zavorce, jinak by se jednalo o fci vracejici ukazatel na integer
	cout<<"scitat(1) nebo odecitat(2)?: ";
	do {
		cin>>fce;
	} while (fce!= 1 && fce!= 2);
	Pfce = (fce==1)? &Soucet: &Rozdil;
	cout << endl <<"Zadejte dve cisla: ";
	cin>> i >> j;
	cout<< endl << "vysledek je: "<< Pfce(i,j);
	return 0;
}