#include <iostream>
#include <time.h>
#include <cstring>
using namespace std;

class block_books {
    int type;

    public:
    block_books(){ type=0;};
    block_books(int);
    void set_type(int);
    int get_type();
    friend ostream& operator <<(ostream &,block_books&);
    friend istream& operator >>(istream &,block_books&);
};

block_books::block_books(int type):type(type){};

void block_books::set_type(int type){this->type=type;};

int block_books::get_type(){ return type;};

istream& operator >>(istream& in,block_books& obj){
    int temp;
    cout<<"Dati tipul cartii(0-intoarsa , 1-deschisa): ";
    in>>temp;
    if((temp==0)||(temp==1)){
    obj.set_type(temp);
    }
    else {cout<<"A fost introdusa cifra incorecta! ";}

    return in;
}

ostream& operator <<(ostream& out,block_books&obj){

    if((obj.type=0)){
    out<<"Tipul cartii: intoarsa"<<endl;
    }
     if((obj.type=1)){
    out<<"Tipul cartii: deschisa"<<endl;
    }

return out;

}

class book:public block_books {
    char* grade;
    char* color;

    public:
    book(){grade=0; color=0;};
    ~book(){delete[]grade; delete[]color;}
    void set_grade(char*);
    void set_color(char*);
    char* get_grade();
    char* get_color();
    friend ostream& operator <<(ostream &,book&);
    friend istream& operator >>(istream &,book&);
};


void book::set_grade(char *grade){
     if(this->grade!=NULL)delete[]this->grade;
     this->grade=new char[strlen(grade)+1];
     strcpy(this->grade,grade);
};

void book::set_color(char *color){
     if(this->color!=NULL)delete[]this->color;
     this->color=new char[strlen(color)+1];
     strcpy(this->color,color);
};


char* book::get_grade(){ return grade;};
char* book::get_color(){ return color;};

istream& operator >>(istream& in,book& obj){
     char temp1[100],temp2[100];
     cout<<"Dati gradul cartii: "<<endl;
     in>>temp1;
     cout<<"Dati culoarea cartii: "<<endl;
     in>>temp2;

     obj.set_grade(temp1);
     obj.set_color(temp2);
     return in;
}

ostream& operator <<(ostream& out,book&obj){


     out<<"Gradul cartii: "<<obj.get_grade()<<endl;
     out<<"Culoarea cartii: "<<obj.get_color()<<endl;

     return out;
}

class post_order:public book {
    int n_order;
    public:
    friend ostream& operator <<(ostream &,post_order&);
    friend istream& operator >>(istream &,post_order&);
};


istream& operator >>(istream& in,post_order& obj){
     char temp2[100],temp3[100];
     int temp1;
     cout<<"Dati tipul cartii(0-intoarsa , 1-deschisa): ";
     in>>temp1;
     if((temp1==0)||(temp1==1)){
     obj.set_type(temp1);
     }
     else {cout<<"A fost introdusa cifra incorecta! "; obj.set_type(1);}

     cout<<"Dati gradul cartii: "<<endl;
     in>>temp2;
     obj.set_grade(temp2);
     cout<<"Dati culoarea cartii: "<<endl;
     in>>temp3;
     obj.set_color(temp3);
     return in;
}

ostream& operator <<(ostream& out,post_order&obj){

     if((obj.get_type()==0)){
     out<<"Tipul cartii: intoarsa"<<endl;
     }
     if((obj.get_type()==1)){
     out<<"Tipul cartii: deschisa"<<endl;
     }
     out<<"Gradul cartii: "<<obj.get_grade()<<endl;
     out<<"Culoarea cartii: "<<obj.get_color()<<endl;
     return out;
}


class post_random:public book {

    public:
    friend ostream& operator <<(ostream &,post_random&);
    friend istream& operator >>(istream &,post_random&);
};

ostream& operator <<(ostream& out,post_random&obj){

     out<<"Tipul cartii: "<<obj.get_type()<<endl;
     out<<"Gradul cartii: "<<obj.get_grade()<<endl;
     out<<"Culoarea cartii: "<<obj.get_color()<<endl;

     return out;
}

int main(){

   book b;
   post_order p1,p2;
   cout<<"Dati datele pentru cartea 1"<<endl;
   cin>>p1;
   cout<<"Dati datele pentru cartea 2"<<endl;
   cin>>p2;
   post_order p[2]={p1,p2};

   cout<<endl<<"Afisare in ordine:"<<endl;
   cout<<"Cartea 1"<<endl;
   cout<<p[0];
   cout<<"Cartea 2"<<endl;
   cout<<p[1];

   srand(time(0));
   int i=rand()%1;

   cout<<endl<<"Afisare random:"<<endl;
   cout<<"Cartea "<<i+1<<endl;
   cout<<p[i];
   int k;
   if (i==0) k=1;
   else if (i==1) k=0;
   cout<<"Cartea "<<k+1<<endl;
   cout<<p[k];

   return 0;
}