#include <iostream.h>
#include <conio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 10

class set{
   public:
      int member[MAX];
      int count;
      char name;
      set(char);
      void insert();
      void print();
      void new_member();
      set eshterak(set);
      set ejtema(set);
      int subset(set);
};
void set::set(char set_name){
   count=0;
   name=set_name;
}

void set::insert(){
   clrscr();
   do{
   cout <<"Enter number of "<<name<<" members ";
   cin>>count;
   }while(count>MAX);
   int new_member;
   for(int i=1;i<=count;i++){
      cout<<"Member "<<i<<" of "<<name<<" :  ";
      cin>>new_member;
      int find=0;
      for(int j=1;j<i;j++)
	 if(new_member==member[j])
	    find=1;
      if (find==0)
	 member[i]=new_member;
      else
	 i--;
   }
} ;

void set::print(){
   clrscr();
   cout<<name<<" ={";
   for(int i=1;i<=count;i++)
   {
      cout<<member[i];
      if(i!=count)
      cout<<" , ";
   }
   cout<<"}\n" ;
   //gotoxy(25,43);
   cout<<"Press a Key to Continue...";
   getch();
} ;

void set::new_member(){
   clrscr();
   if(count==MAX){
      cout<<name<<" is full!\n";
      getch();}
   else{
   int x;
   int find=0;
   cout<<"Enter new member to add to "<<name<<" : ";
   cin>>x;
   for(int i=1;i<=count;i++)
   if (member[i]==x)
   find=1;
   if(find==0){
   count++;
   member[count]=x;
   cout<<x<<"  was added to " <<name<<".\npress enter to continue...\n";}
   else{
   cout<<x<<" exist in " <<name<<". press enter to comtinue\n";}
   getch();

   }
}

set set::eshterak(set set1){
   set eshterak=set('e');
   for(int i=1;i<=count;i++){
	int find=0;
	for(int j=1;j<=
	set1.count;j++){
	   if (member[i]==set1.member[j])
	      find=1;
	}
	if(find==1)
	{
	eshterak.count++;
	eshterak.member[eshterak.count]=member[i];
	}
   }
   return eshterak;
}

set set::ejtema(set set1){
   set ejtema=set('U');
   for(int i=1;i<=count;i++)
   {
      ejtema.member[++ejtema.count]=member[i];
   }
   for(i=1;i<=set1.count;i++)
   {
      int find=0;
      for(int j=1;j<=count;j++)
      if (set1.member[i]==member[j])
	 find=1;
      if(find==0)
	 ejtema.member[++ejtema.count]=set1.member[i];
   }
   return ejtema;
}

int set::subset(set set1){
   int is_subset=1;
   for(int i=1;i<=set1.count;i++){
      int find=0;
      for(int j=1;j<=count;j++)
	 if(member[j]==set1.member[set1.count])
	    find=1;
   if(find==0)
      is_subset=0;
   }
   return is_subset;
}
void menu(){
   cout<<"1) Enter Sets       \n";
   cout<<"2) Insert new number  \n";
   cout<<"3) print sets         \n";
   cout<<"4) Eshterak           \n";
   cout<<"5) Ejtema             \n";
   cout<<"6) check for subset   \n";
   cout<<"7) Exit               \n";
   cout<<"*************************";
}

void main(){
   clrscr();
   set a=set('A');
   set b=set('B');
   while(1){
   clrscr();
   menu();
   int choice;
   cout<<"\n\nenter your choice ";
   cin>>choice;
   switch(choice){
   case 1:
      a.insert();
      b.insert();
      break;
   case 2:
      a.new_member();
      b.new_member();
      break;
   case 3:
      a.print();
      b.print();
      break;
   case 4:
      cout<<"\n a"<<char(239)<<"b =";
      a.eshterak(b).print();
      break;
   case 5:
      cout<<"\n aUb :";
      a.ejtema(b).print();
      break;
   case 6:
      clrscr();
      cout <<"b zirmajmooe a ";
      if(a.subset(b)==0)
	 cout<<"nist";
      else
	 cout<<"ast";
      cout <<"\na zirmajmooe b ";
      if(b.subset(a)==0)
	 cout<<"nist";
      else
	 cout<<"ast";
      if(a.subset(b)&&b.subset(a)){
	 cout<<"\n=>  a=b";
	 }
      getch();
      break;
   case 7:
      exit(1);
   }
}
}