#include <iostream>

#include <cstdlib>

using namespace std;

void fillArray(int* const arr, const int size){

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

arr[i] = rand() % 10;

}

}

void showArray(const int* const arr, const int size){

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

cout << arr[i] << "\t";

}

cout << endl;

}

void push_back(int *&arr, int &size, const int value){

int *newArray = new int[size + 1];

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

newArray[i] = arr[i];

}

newArray[size] = value;

size++;

delete [] arr;

arr = newArray;

}

void push_front(int *&arr, int &size, const int value){

int *newArray = new int[++size];

for (int i = 1; i < size; i++){

newArray[i] = arr[i-1];

}

newArray[0] = value;

delete [] arr;

arr = newArray;

}

void pop_back(int *&arr, int &size){

int *newArray = new int[--size];

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

newArray[i] = arr[i];

}

delete [] arr;

arr = newArray;

}

void pop_front(int *&arr, int &size){

int *newArray = new int[--size];

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

newArray[i] = arr[i+1];

}

delete [] arr;

arr = newArray;

}

int main(){

setlocale(LC_ALL, "rus");

int size = 5;

int *arr1 = new int[size];

fillArray(arr1, size);

showArray(arr1, size);

push_back(arr1, size, 55);

showArray(arr1, size);

pop_back(arr1, size);

showArray(arr1, size);

push_front(arr1, size, 66);

showArray(arr1, size);

pop_front(arr1, size);

showArray(arr1, size);

delete [] arr1;

system("pause");

return 0;

}