steki

#include "pch.h"
#include <iostream>
#include <time.h>
using namespace std;
struct tstk {
    int inf;
    tstk *a;
}*a;

tstk *AddStask(tstk  *sp, int inf) {
    tstk *spt = new tstk;
    spt->inf = inf;
    spt->a = sp;
    return spt;
}

tstk *ReadStackD(tstk *sp, int &inf) {
    if (sp == NULL) return NULL;
    tstk *spt = sp;
    inf = sp->inf;
    sp = sp->a;
    delete spt;
    return sp;
}

tstk *DelStackAll(tstk *sp) {
    tstk *spt; int inf;
    while (sp != NULL) {
        spt = sp;
        inf = sp->inf;
        cout << inf << " ";
        sp = sp->a;
        delete spt;
    }
    return NULL;
}
int main()
{
    setlocale(LC_ALL, "Russian");
    srand(time(NULL));
    int n;
    cout << "Введите количество элементов ";
    cin >> n;
    int sum = 0;
    for (int i = 0; i < n; i++) {
        int temp = rand() % 101 - 50;
        cout << temp << " ";
        sum += temp;
        a = AddStask(a, temp);
    }
    double sr = double(sum) / n;
    cout << endl;
    cout << "Среднее значение " << sr<<endl;
    while (a != NULL) {
        int temp;
        a = ReadStackD(a, temp);
        if (temp > sr)cout << temp << " ";
    }

    DelStackAll(a);
    return 0;
}