int i(1);

                element* temp=first->down;

                while (temp!=NULL)

                {

                               i++;

                               temp=temp->down;

                };

                return i;

};

//if OK return 0, esle return i (number current element)

int list::current_element(int k)

{

                if (first==NULL)

                {

                               cout<<"V spiske 0 elementov.\n";

                               return 0;

                };

                int i(1);

                current=first;

                if(i==k) return 0;

                while (current->down)

                {

                               current=current->down;

                               if (++i==k) return 0;

                };

                return i;

};

//Esli sled. element sdelalsa tekuschim return 1, else 0

int list::next_element()

{

                if (current->down)

                {

                               current=current->down;

                               return 1;

                };

                return 0;

};

//Esli pred. element sdelalsa tekuschim return 1, else 0

int list::previous_element()

{

                if (current->up)

                {

                               current=current->up;

                               return 1;

                };

                return 0;

};

int list::num_current()

{

                if(current==NULL)return 0;

                int i(1);

                element* temp=current;

                while (temp->up!=NULL)

                {

                               i++;

                               temp=temp->up;

                };

                return i;

};

char* list::read_element()

{

                return current->info;

};

char* list::read_element(int &k)

{

                int i;

                i=current_element(k);

                if ((i<k)&&(i!=0))

                {

                               cout<<"V spiske vsego "<<i<<" elmentov. Po etomu vmesto "<<k<<" elementa, functsia vozvrashchaet "<<i<<" element!!!\n";

                               k=i;

                };

                return current->info;

};

void list::init_list(int k, char* str)

{

                if (k==0) return;

                int f(2);

                char* s;

                s=new char[strlen(str)+7];

                if (first!=NULL)

                {

                               cout<<"Spisok ne pust!!!\n";

                               cout<<"Chto delat?(0/1/2)\n";

                               cout<<"  0)Otmenit initsializatsiu;\n";

                               cout<<"  1)Dopisat fonarnuu infomatsiu v konets spiska;\n";

                               cout<<"  2)Zamenit spisok novoi fonarnoi informatsyei.\n";

                               cin>>f;

                };

                if(f==0) return;

                if(f==1) current=last;

                if(f==2)

                {

                               del_list();

                               first=new element[1];

                               first->info=new char[strlen(str)+3];

                               sprintf(first->info,"%s 1",str);

                               first->up=first->down=NULL;

                               current=last=first;

                };

                for (int j=f; j<=k; j++)

                {

                               sprintf(s,"%s %d",str,j);

                               add_after(s);

                };

                return;

};

void list::print_list()

{

                cout<<"Vmestimoe spiska:\n";

                element* temp=first;

                if (first==NULL)

                {

                               cout<<"Spisok pust!!!\n";

                               return;

                };

                do

                while (temp);

                cout<<"\n";

                return;

};

int list::fput_list(char* s)

{

                FILE* f;

                if ((f=fopen(s,"w+"))==NULL)

                {

                               cout << "Can not open file "<<s<<"\n";

                               return 0;

                };

                if (!first) fclose(f);

                element* temp=first;

                do

                {

                               fputs(temp->info,f);

                               fputs("\n",f);

                               temp=temp->down;

                }

                while (temp);

                fclose(f);

                return 1;

};

int list::fget_list(char* s)

{

                int ff=2;

                if (first!=NULL)

                {

                               cout<<"Spisok ne pust!!!\nChto delat?(0/1/2)\n  0)Otmenit vostanovlenie iz faila;\n";

                               cout<<"  1)Vostanovit infomatsiu iz faila v konets spiska;\n";

                               cout<<"  2)Zamenit spisok informatsyei iz faila.\n";

                               cin>>ff;

                };

                if(!ff) return ff;

                FILE* f;

                if ((f=fopen(s,"r"))==NULL)

                {

                               cout<<"Can not open file "<<s<<"\n";

                               return 0;

                };

                char str[255];

                if(ff==1)

                               current=last;

                char *sss;

                if(ff==2)

                               del_list();

                while (fgets(str,256,f))

                {

                               sss=new char[strlen(str)];

                               int j=0;

                               while(str[j]!='\n')

                                               sss[j]=str[j++];

                               sss[j]='\0';

                               add_after(sss);

                               delete [] sss;

                };

                fclose(f);

                return ff;

};

#endif

#include "list_.h"

void main()

{

                int n=16;

                cout<<"Rozhdenie spiska...\n";

                list s;

                char a[255];

                strcpy(a,"Seha");

                s.print_list();

                cout<<"\nVsego elementov v spiske: "<<s.num_list();

                cout<<"\nTekuschiy element spiska: "<<s.num_current()<<'\n';

                cout<<"Press <Enter> for go on...\n";

                getchar();

                cout<<"Skol'ko proinitsializirovat' elementov spiska?\nn=";

                cin>>n;

                cout<<"Initsialitsia spiska...\n";

                s.init_list(n,a);

                s.print_list();

                cout<<"\nVsego elementov v spiske: "<<s.num_list();

                cout<<"\nTekuschiy element spiska: ";

                cout<<s.num_current()<<'\n';

                cout<<"Press <Enter> for go on...\n";

                getchar();//clear iostream

                getchar();

                cout<<"Kakoi element v spiske sdelat' tekeschim?\nn=";

                cin>>n;

                s.current_element(n);

                cout<<"\nVsego elementov v spiske: "<<s.num_list()<<"\nTekuschiy element spiska: "<<s.num_current()<<'\n';

                cout<<"Skol'ko elementov dobavit'?\n";

                cin>>n;

                getchar();//clear iostream

                for (int i=0; i<n; i++)

                {

                               cout<<"Vvedite stroku dlja dobavlenija v spisok\n";

                               gets(a);

                               cout<<"Dobavlenie posle tekuschego...\n";

                               s.add_after(a);

                               s.print_list();

                               cout<<"\nVsego elementov v spiske: "<<s.num_list()<<"\nTekuschiy element spiska: "<<s.num_current()<<'\n';

                               cout<<"Press <Enter> for go on...\n";

                               getchar();

                };

                cout<<"Delaem tekuschim sledujushiy element...\n";

                s.next_element();

                cout<<"\nVsego elementov v spiske: "<<s.num_list()<<"\nTekuschiy element spiska: "<<s.num_current()<<'\n';

                cout<<"Press <Enter> for go on...\n";

                getchar();

                cout<<"Skol'ko eschje elementov spiska nuzhno dobavit'?\n";

                cin>>n;

                getchar();//clear iostream

                for (int i=0; i<n; i++)

                {

                               cout<<"Vvedite stroku dlja dobavlenija v spisok\n";

                               gets(a);

                               cout<<"Dobavlenie do tekuschego...\n";

                               s.add_before(a);

                               s.print_list();

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