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#include <iostream>
using namespace std;
 
 
  struct ListNode {
     int val;
     ListNode *next;
     ListNode(int x) : val(x), next(NULL) {}
 };
 
class Solution {
public:
    ListNode* reverseList(ListNode* head) {
       if(head ==NULL)
       return NULL;
       ListNode *p;
       p = head;
       while(p!=NULL)
       {
          list.push(p->val);
          p = p->next;
       }
       ListNode *result =&(ListNode(0));
 
 
       while(list.empty()!)
       {
        ListNode *temp =  ListNode( list.pop) ;
       ;
        result->next = temp;
 
 
       }
 
 
       return result;
 
 
 
    }
 
private:
    stack<int> list;
};
int main() {
	// your code goes here
	return 0;
}

prog.cpp:43:5: error: 'stack' does not name a type
     stack<int> list;
     ^
prog.cpp: In member function 'ListNode* Solution::reverseList(ListNode*)':
prog.cpp:20:11: error: 'list' was not declared in this scope
           list.push(p->val);
           ^
prog.cpp:23:39: error: taking address of temporary [-fpermissive]
        ListNode *result =&(ListNode(0));
                                       ^
prog.cpp:26:14: error: 'list' was not declared in this scope
        while(list.empty()!)
              ^
prog.cpp:26:26: error: expected ')' before '!' token
        while(list.empty()!)
                          ^
prog.cpp:26:27: error: expected primary-expression before ')' token
        while(list.empty()!)
                           ^

Standard output is empty