#include <iostream>
#include <cstdlib>
#include <ctime>
#include <string>
using namespace std;
struct element{
int liczba;
element *next;
};
bool czyPusty(element *stos){
bool wynik = stos == nullptr ? true : false;
return wynik;
}
void dodajElement(element*& stos){
srand(time(nullptr));
element* el = new element;
el->liczba = rand()%100 +0;
el->next = stos;
stos = el;
}
void usunElement(element*& stos){
if(stos != nullptr){
element* temp = stos;
stos = stos->next;
delete temp;
}
}
int pobierzElement(element* stos){
if(stos != nullptr){
return stos->liczba;
}else{
return -1;
}
}
void usunWszystkieElementy(element*& stos){
while(!czyPusty(stos)){
usunElement(stos);
}
}
int main()
{
cout << "Menu:" << "n"
<< "1 - sprawdzenie czy stos jest pusty" << "n"
<< "2 - dodanie elementu na stos" << "n"
<< "3 - usuniecie elementu ze stosu" << "n"
<< "4 - pobranie elementu ze stosu" << "n"
<< "5 - usunięcie wszystkich elementów ze stosu" << "n"
<< "6 - wyjście z programu" << "n"
<< endl;
element* stosZNullPnt = nullptr;
int menu = -1;
while(menu != 6){
cin >> menu;
switch (menu){
case 1:
{
czyPusty(stosZNullPnt);
string komunikat = czyPusty(stosZNullPnt) ? "Pusty" : "Niepusty";
cout << komunikat << endl;
}
break;
case 2:
dodajElement(stosZNullPnt);
break;
case 3:
usunElement(stosZNullPnt);
break;
case 4:
{
int ostatni = pobierzElement(stosZNullPnt);
cout << "Ostatni element to: " << ostatni << endl;
break;
}
case 5:
usunWszystkieElementy(stosZNullPnt);
break;
case 6:
return 0;
}
}
return -1;
}
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