C++程式码问题

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请问这题该如何解呢??

#include
#include
#include <math.h>

using namespace std;

class NODE
{
public:
string name;
int price;
NODE *next;

NODE(string s, int p) {    name = s;    price = p;    next = NULL; }

};

NODE *head = NULL;

void BuildLink(void)
{
NODE *pt, *x;

string name[10] = {"A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "A10" };int price[10] = {12, 15, 8, 10, 13, 8, 10, 12, 16, 0};string y;pt = new NODE(name[0], price[0]);head = pt;x = pt;for (int i=1; i<10; i++){    pt = new NODE(name[i], price[i]);    x->next = pt;    x = pt;}

}

int fee(string S, string D)
{
//你的程式码
}

int main() {
string S, D;
char c;
int money;

NODE* x;BuildLink();cin >> S;cin >> D;cin >> c;money = fee(S, D);if (c == 'Y' || c == 'y')   money = round(money * 0.8);cout << money << endl;return(0);

}