Начал изучать шаблоны , и не могу переделать , подскажите что не так .
| C++ |
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| template <class data_one>
class linklist
{
private:
template <class data_one>
struct list
{
data_one ID_code;
list* next_op;
list(data_one id, list* ptrN = NULL)
{
ID_code = id;
next_op = ptrN;
}
};
list<data_one>* first;
list<data_one>* last;
public:
linklist()
{
first = last = NULL;
}
~linklist()
{
list<data_one>* next = first;
list<data_one>* curr = NULL;
while (next)
{
curr = next;
next = next->next_op;
delete curr;
}
}
void addFirst(data_one ID_code)
{
list<data_one>* newData = new list(ID_code, first);
if (!first)
{
last = newData;
}
first = newData;
}
void addLast(data_one ID_code)
{
list<data_one>* newData = new list(ID_code,first);
if (!last)
{
first = newData;
}
else
{
last->next_op = newData;
}
last = newData;
}
void remove(data_one ID_code)
{
list<data_one>* prev = NULL;
list<data_one>* curr = first;
while (curr)
{
if (curr->ID_code == ID_code)
{
if (!prev)
{
first = curr->next_op;
delete curr;
curr = first;
}
if (prev || curr->ID_code == ID_code)
{
prev->next_op = curr->next_op;
delete curr;
curr = prev->next_op;
}
}
else
{
prev = curr;
curr = curr->next_op;
}
}
}
void removeAll()
{
list<data_one>* prev = NULL;
list<data_one>* curr = first;
while (curr)
{
prev = curr;
curr = curr->next_op;
delete prev;
}
cout << "\n All delete done ";
}
void insert(data_one ID_code, int place_insert)
{
list<data_one>* newData = new list(ID_code);
list<data_one>* curr = first;
list<data_one>* prev = NULL;
while (curr)
{
if (curr->ID_code == place_insert)
{
if (!prev)
{
first = newData;
newData->next_op = curr;
curr = curr->next_op;
}
if (prev || curr->ID_code == place_insert)
{
prev->next_op = newData;
newData->next_op = curr;
}
}
prev = curr;
curr = curr->next_op;
}
}
int showData()
{
list<data_one>* curr = first;
if (curr == NULL)
{
cout << "\n List is empty ... ";
return 0;
}
while (curr)
{
cout << "\n ID - " << curr->ID_code;
curr = curr->next_op;
}
}
void menu(string& choice)
{
cout << "\n Select act : "
<< "\n af - add element in first place ."
<< "\n al - add element in last place ."
<< "\n r element - enter id element ."
<< "\n ra element - remove all elements ."
<< "\n i - enter insert place ."
<< "\n s - show all elements .\n\n";
cout << "\n -> ";
cin >> choice;
}
void setData(data_one& ID_code)
{
cout << "\n Enter id code -> ";
cin >> ID_code;
}
void setPlace(int& place)
{
cout << "\n Enter place -> ";
cin >> place;
}
};
int main()
{
linklist<int> lst1;
int ID_code = 0, place = 0;
string ch;
do
{
lst1.menu(ch);
if (ch == "af")
{
lst1.setData(ID_code);
lst1.addFirst(ID_code);
}
if (ch == "al")
{
lst1.setData(ID_code);
//lst1.addLast(ID_code);
}
if (ch == "r")
{
lst1.setPlace(place);
//lst1.remove(place);
}
if (ch == "i")
{
lst1.setData(ID_code);
lst1.setPlace(place);
//lst1.insert(ID_code, place);
}
if (ch == "s")
{
lst1.showData();
}
if (ch == "ra")
{
//lst1.removeAll();
}
cout << "\n\n Exit yes|no -> ";
cin >> ch;
system("cls");
} while (ch != "yes");
//cout << "\n\n";
return 0;
} |
|
извините , нашол ошибку (((
(
Сообщение от Pe4enko_
