#include <iostream>
using namespace std;

struct date
{
   int year;
   int month;
   int day;
};

struct stocks
{
   int stockprice;
   date time;
};

int maxprice(stocks* data, int n, date end, date start);

int main()
{
   int n;
   cin>>n;
   stocks *data = new stocks[n];

   for(int i=0;i<n;i++)
      cin>>data[i].time.year>>data[i].time.month>>data[i].time.day>>data[i].stockprice;
  
   date start, end;
   cin>>start.year>>start.month>>start.day;
   cin>>end.year>>end.month>>end.day;

   int L;
   L = maxprice(data, n, end, start);
   cout<
   return 0;
}

int maxprice(stocks* data, int n, date end, date start)
{
   int largest = 0;
   int idx;

   for(idx=0;idx<n;idx++)
      if(data[idx].time.year == start.year && data[idx].time.month == start.month && data[idx].time.day == start.day)
         break;

   while(1)
   {
      largest = (largest>data[idx].stockprice ? largest : data[idx].stockprice);
      if(data[idx].time.year == end.year && data[idx].time.month == end.month && data[idx].time.day == end.day)
         break;
      idx++;
   }

   return largest;
}



일케하면  자꾸 stocks선언을 참조하십시오 이렇게 뜨고  구조체 내에 변수에 다 접근을할수가없어요 왜그런걸까요