Лабы / С++.ЭТМО / ООП_ЭТМО / yravn

// izbir.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"


#include <iostream.h>
#include <new.h>
#include "string.h"
struct ElemType {float x1,x2;} ;
struct Cell
{
	ElemType x;
    Cell* Next;
};
class CList
{
	  Cell Head;
   public:
   	  CList();
      ~CList();
	  void Delete(Cell* pos);
      Cell* End(void);
      void MakeNull(void);
      void end_insert(ElemType x);
	  void Show();
	  void Proizv();
};

CList::CList()
{
	Head.Next=NULL;
};
CList::~CList()
{
//	MakeNull();
};
void CList::Show()
{ Cell *temp_ptr = Head.Next;
  if (temp_ptr == NULL) cout<<"Empty Node"<<endl;
  else
  while (temp_ptr != NULL) 
  {
   cout<<temp_ptr->x.x1<<"x^"<<temp_ptr->x.x2<<"+";
   temp_ptr=temp_ptr->Next;
  }
  cout<<endl;

}
void CList::Proizv()
{ Cell *temp_ptr = Head.Next;
  if (temp_ptr == NULL) return;
  else
  while (temp_ptr != NULL) 
  {
   temp_ptr->x.x1=temp_ptr->x.x1*temp_ptr->x.x2;
   temp_ptr->x.x2=temp_ptr->x.x2-1;
   temp_ptr=temp_ptr->Next;
  }
  cout<<endl;

} 
void CList::end_insert (ElemType x)
{  Cell *tail=&Head;  // ??®??                                     
   while(tail->Next!=NULL) 
   {tail=tail->Next;}
    tail->Next=new Cell;
 	tail->Next->x=x;
    tail->Next->Next=NULL;
	//tail->link=tail1;
}  
void CList::Delete(Cell* pos)
{
	Cell* temp;
	temp=pos->Next;
	pos->Next=pos->Next->Next;
	delete temp;

};
Cell* CList::End(void)
{ 	if(Head.Next!=NULL)
	{
		Cell* p=Head.Next;
		while(p->Next->Next!=NULL) p=p->Next;
		return p;
	};
	return NULL;

};
void CList::MakeNull()
{
	while(End()!=NULL) Delete(End());
};

int main(int argc, char* argv[])
{   
    CList yravn;
	ElemType s;
	int i=1;
    char choise;
    cout<<"Vvod yravneniya"<<endl;	
for(;;)
{	
    cout<<"c"<<i<<"=";
	cin>>s.x1;
    cout<<"e"<<i<<"=";
	cin>>s.x2;
    yravn.end_insert(s); 
    cout<<"Esche odin? N";
	cin>>choise;
	if (choise=='N') break;
} 
    yravn.Show(); 
	yravn.Proizv();
    yravn.Show(); 
	return 0;
}