Linked list c++ , expected primary expression before -> - c++

Question

im trying to learn linked lists in c++; my code look like this
#include <iostream>
#include <string>
using namespace std;
struct node{
int number;
node *next;
};
struct zoznam{
node *head=NULL;
node *tail=NULL;
};
void insertAsFirst(node *&head,node *&last, int number){
node *tmp = new node;
tmp->number = number;
tmp->next=NULL;
head=tmp;
last=tmp;
}
void insertValues( node *&head , node *&last, int number){
if(head==NULL){
insertAsFirst(zoznam->head,zoznam->tail,number);
}else{
node *tmp = new node;
tmp->number=number;
tmp->next=NULL;
last->next=tmp;
//last=tmp;
}
}
int main()
{
for( int i = 0; i < 10; i++){
insertValues(zoznam->head,zoznam->tail,i);
}
node *current=zoznam->head;
while(current!=NULL){
cin<<current->number << endl;
current=current->next;
}
return 0;
}
expected primary-expression before '->' token|
Being new to c++ , i have no idea what the error means , how can i fix that , i tried to check it up but found nothing. Thanks

Answer 1

As you're new to C++, I am giving you some details.
When you are using struct I mean you define any struct then it becomes a type name not a variable. To use that you need to declare variable(s) of that type.
Here, in the main, you're using zoznam, which is a type name and the definition of that type is the definition of the struct.
Declaration: zoznam var_name;
Use: var_name.head; or 'var_name.tail;'.
Learn more about struct and pointer. Read the documentations carefully not only the example codes in this two link.