variant_25

#include <iostream>
#include <algorithm>
#include <windows.h>
#include <conio.h>

using namespace std;

int input_array(int [], size_t);
int make_second_array(int [], size_t, int []);
int make_third_array(int [], size_t , int []);
void output_array(int [], size_t);

int main() {
  int choice;
  size_t n;

  cout << "Enter array size: ";
  cin >> n;

  if(!cin || n > 30 || n < 0)
    return 0;

  int array[n];
  int array2[n];
  int array3[n];

  do {

    system("cls");

    cout << "Menu: \n";
    cout << "1. Input array\n";
    cout << "2. Make second array and reverse it\n";
    cout << "3. Make third array and sort it\n";
    cout << "4. Print arrays\n";
    cout << "5. Exit\n\n";

    cout << "Make your choice: ";
    cin >> choice;

    switch (choice) {
      case 1:
        system("cls");
        input_array(array, n);
        Sleep(1000);
        break;

      case 2:
        system("cls");
        make_second_array(array, n, array2);
        cout << "Second array created and reversed!";
        Sleep(1250);
        break;

      case 3:
        system("cls");
        make_third_array(array, n, array3);
        cout << "Third array created and sorted in ascending order!";
        Sleep(1500);
        break;

      case 4:
        system("cls");
        output_array(array, n);
        output_array(array2, n);
        output_array(array3, n);
        cout << "\n\n Press any key to get back to the menu...";
        getch();
        break;

    }
  } while(choice != 5);
  return 0;
}

int input_array(int array[], size_t array_size) {
  for (size_t i = 0; i < array_size; i++) {
    cout << "Enter value for element #" << i << ": ";
    cin >> array[i];
  }

  return *array;
}

int make_second_array(int array[], size_t array_size, int array2[]) {
  size_t i, j;

  for (i = 0; i < array_size; i++) {
    array2[i] = array[i];
  }

  j = i - 1; // last element of the array
  i = 0; // null i to reuse

  while(i < j) {
    int temp;

    temp = array2[i];
    array2[i] = array2[j];
    array2[j] = temp;

    i++;
    j--;
  }

  return *array2;
}

int make_third_array(int array[], size_t array_size, int array2[]) {

  size_t i, j;

  for (i = 0; i < array_size; i++) {
    array2[i] = array[i];
  }

  for (i = 0; i < array_size; i++) {
    for (j = 0; j < array_size - i; j++) {

      if(array2[j] > array2[j + 1]) {
        int temp = array2[j];
        array2[j] = array2[j + 1];
        array2[j + 1] = temp;
      }
    }
  }
  return *array2;
}

void output_array(int array[], size_t array_size) {
  for (size_t i = 0; i < array_size; i++) {
    cout << array[i] << "   ";
  }
  cout << endl;
}