Em sai ở đâu ạ : Lỗi expression must have bool type (or be convertible to bool)
#include <iostream>
#include <string>
using namespace std;
struct info {
int Paper_ID;
string title;
int yearrealease;
};
struct Publish {
int Publisher_ID;
string publisher;
};
struct node {
info NPaper;
node* pNext;
};
struct singleList {
node* pHead;
node* pTail;
};
void initializeList(singleList& l) {
l.pHead = NULL;
l.pTail = NULL;
}
node* createNode(info x) {
node* p;
p = new node;
if (p == NULL)
return NULL;
p->NPaper = x;
p->pNext = NULL;
return p;
}
void insertHead(singleList& l, node* p)
{
if (l.pHead == NULL)
{
l.pHead = p;
l.pTail = p;
}
else
{
p->pNext = l.pHead;
l.pHead = p;
}
}
void InputList(singleList& l)
{
int n;
cout << "Quantity: ";
cin >> n;
info k;
for (int i = 1; i <= n; i++)
{
cout << "+) Number " << i << ": " << endl;
cout << "\n ID: ";
cin >> k.Paper_ID;
cout << "\n Title: ";
cin.ignore();
getline(cin, k.title);
cout << "\n Year: ";
cin >> k.yearrealease;
//insertHead(l, createNode(k));
insertHead(l, createNode(k));
}
}
void OutputList(singleList& l)
{
node* p = l.pHead;
if (p == NULL)
{
cout << "List Empty";
return;
}
cout << "Paper List" << endl;
int dem = 1;
while (p != NULL)
{
cout << dem << ") ID: " << p->NPaper.Paper_ID << endl;
cout << "Title: " << p->NPaper.title << endl;
cout << "Year: " << p->NPaper.yearrealease << endl;
dem++;
p = p->pNext;
}
}
int main()
{
singleList l;
initializeList(l);
while (l) {
int n;
cout << "1. Nhap danh n bai bao bang cach them vao dau sau do xuat danh sach vua nhap";
cout << "6. End.";
cout << "\n n: ";
cin >> n;
if (n == 6)
break;
else if (n == 1)
{
InputList(l);
OutputList(l);
}
}
}
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