#include "stdafx.h"
#include <iostream>
#include <cstdlib> // Для srand(time(NULL)); и rand...;
#include <time.h> // Для time(NULL);
#include <cmath>

using namespace std;

int unsigned z = 0;

int *copy_mas_out (int *in_mas, unsigned int in_length)
{
    int *copy_mas = new int[in_length];

    int min = in_mas[0];
    for (unsigned int i = 1; i < in_length; i++)
    {
        if (min > in_mas[i])
            min = in_mas[i];
    }

    for (unsigned int i = 0; i < in_length; i++)
    {
        if (abs(min - in_mas[i]) <= 2)
        {
            copy_mas[z] = in_mas[i];
            z++;
        }
    }

    return copy_mas;
    delete [] copy_mas;
}


int main()
{
    srand(time(NULL));
    setlocale(0, "");

    unsigned int lengthmas = 0;
    cout << "Укажите длину массива..." << endl;
    cin >> lengthmas;

    if (lengthmas < 0)
    {
        cout << "ERROR" << endl;
        exit(1);
    }

    int *mas = new int[lengthmas];

    for (unsigned int i = 0; i < lengthmas; i++)
        mas[i] = rand() % 40 - 20;

    unsigned int i;
    for (i = 0; i < lengthmas; i++)
        cout << "mas[" << i << "] = " << mas[i] << endl;

    int * copy_mas = copy_mas_out (mas, lengthmas);
    for (unsigned int i = 0; i < z; i++)
        cout  << "copy_mas[" << i << "] = " << copy_mas[i] << endl;

    delete[] mas;
    return 0;
}