Task_1_lists

#include <iostream>
using namespace std;

struct Data {
    int number;
};
struct List {
    Data element;
    List* next;
};

void Print(List* u) {
    List* p = u;
    cout << "Spisok:" << endl;

    while (p) {
        cout << p->element.number << " ";
        p = p->next;
    }
}
int main()
{
    int a;
    List* u = NULL;
    List* x = NULL;
    int i = -1;
    int count = 1;
    cin >> a;

    while (a != 0) {
        cin >> a;

        if (count == 1) {
            u = new List;
            u->element.number = a;
            u->next = NULL;
            x = u;
            count++;
        }
        else {
            x->next = new List;
            x = x->next;
            x->element.number = a;
            x->next = NULL;
        }
    }

    int summ = 0;
    for (List* k = u; k->next != NULL; k = k->next) {
        if (k->element.number % 2 == 0) {
            summ += k->element.number;
        }
    }

    cout << summ;

    Print(u);
}