#include <iostream>

using namespace std;

const int BUFFER_SIZE{5};

using BufferItemT = char;

class BufferT {
    public:
        bool AddItem(BufferItemT item){
           if ( (in +1)% BUFFER_SIZE != out) {
              buffer[in] = item ;
              in = (in +1) % BUFFER_SIZE;
              return true;
           } else{
              return false;
           }

        }

        bool GetItem(BufferItemT & item){
            if (in != out) {
               item = buffer[out];
               buffer[out] = 'x';
               out = (out + 1) % BUFFER_SIZE;
               return true;
            } else {
               return false;
            }
        }

        void PrintInfo() {
           cout << "in = " << in << endl;
           cout << "out = " << out << endl;
           
           int i{0};
           cout <<buffer[0];
           for(i = 1; i < BUFFER_SIZE; ++i) {
             cout << " " << buffer[i];
           }
           cout << endl;
          cout << endl;
        }

    private:
        BufferItemT buffer[BUFFER_SIZE]{'x', 'x' ,'x', 'x', 'x'}; 
        int in{0},
            out{0};
};

void AddItem(char item, BufferT & buffer) {
    cout << endl;
    cout << "Adding a " << item  << "  ";
    if (buffer.AddItem(item)) {
       cout << "Success";
    } else {
       cout << "Failed" ;
    }
    cout << endl;
}

void RemoveItem(BufferT & buffer) {
    BufferItemT ch;

    cout << endl;
    cout << "Removing an item ";
    if (buffer.GetItem(ch)) {
       cout << "got " << ch << ", Success";
    } else {
       cout << "Failed";
    }
    cout << endl;
}


int main() {
    BufferT buffer;
    buffer.PrintInfo();

    AddItem('a' , buffer);
    buffer.PrintInfo();
    
    AddItem('b', buffer);
    buffer.PrintInfo();

    RemoveItem(buffer);
    buffer.PrintInfo();

    AddItem('c', buffer);
    buffer.PrintInfo();

    AddItem('d', buffer);
    buffer.PrintInfo();

    AddItem('e', buffer);
    buffer.PrintInfo();

    AddItem('f', buffer);
    buffer.PrintInfo();

    RemoveItem(buffer);
    buffer.PrintInfo();

    AddItem('f', buffer);
    buffer.PrintInfo();


    return 0;

}