Lab13A

#include <iostream>

using namespace std;

struct comp

{

    int data;

    comp* next;

};

comp* addstack(comp* top, int inf)

{

    comp* spt = new comp;

    spt->data = inf;

    spt->next = top;

    return spt;

}

int chek(comp* top) {
    comp* tmp = top;
    while (tmp) {
        if (tmp->data < 0) return 1;
        tmp = tmp->next;
    }
    return 0;
}

void s_print(comp* top) {

    comp* tmp = top;

    while (tmp) {

        cout << tmp->data << ' ';

        tmp = tmp->next;

    }

}

void delstack(comp* top) {

    comp* tmp; int data;

    while (top) {

        tmp = top;

        data = top->data;

        cout << data << ' ';

        top = top->next;

        delete tmp;

    }

}

int main() {

    setlocale(LC_ALL, "RU");

    comp* top = NULL;

    int n, value;

    cout << "Введите количество элементов стека: ";

    cin >> n;

    cout << "Введите элементы стека: ";

    for (int i = 0; i < n; i++) {

        cin >> value;

        top = addstack(top, value);

    }

    s_print(top);

    chek(top);
    int e = chek(top);
    if (e == 1) cout << "\nесть отрицательные числа";
    else cout << "\nнет отрицательных чисел";
    cout << endl;

    delstack(top);

}