#include <iostream>
using namespace std;

const int cap = 10;
int ar[cap];
int siz=0;
int i = 0;

bool insert_at_end(int a)
{
    if(siz == cap)
    {
        return false;
    }
    ar[i]=a;
    i++;
    siz++;
    return true;
}

bool delete_from_end()
{
    if(siz == 0)
    {
        return false;
    }

    i--;
    siz--;
    return true;
}

void print_array()
{
    for(int j=0;j<siz;j++)
        {
            cout<<ar[j]<<" ";
        }
}

bool del_from_end()
{
    if(siz==cap)
        return false;

    i--;
    siz--;
    return true;
}

bool del_from_start()
{
    if(siz == 0)
        return false;

    for(int j=1;j<siz;j++)
        {
            ar[j-1]=ar[j];
        }
    i--;
    siz--;
    return true;
}

bool insert_at_start(int a)
{
    if(siz==cap)
        return false;

    for(int j=i-1; j>=0 ;j--)
        {
            ar[j+1]=ar[j];
        }
    ar[0] = a;
    i++;
    siz++;
    return true;
    
}



int main() {

    if(insert_at_end(10) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(20) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(30) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(40) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_start(60) == false) cout<<"Size is equal to capacity"<<endl;
    if(del_from_end() == false) cout<<"Size is already zero"<<endl;
    if(del_from_start() == false) cout<<"Size is already zero"<<endl;
    
    // HW :- insert and delete in the middle

    /*
    if(insert_at_end(50) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(60) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(70) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(80) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(90) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(100) == false) cout<<"Size is equal to capacity"<<endl;
    if(insert_at_end(110) == false) cout<<"Size is equal to capacity"<<endl;
    */
    print_array();
  return 0;

}