#include<stdio.h>
#include<conio.h>

struct node
{
	int Info;
	struct node* pNext;
};
typedef struct node NODE;

typedef struct list
{
	NODE* pHead;
	NODE* pTail;
};
typedef struct list LIST;

void Init(LIST& L);
NODE* getNode(int x);
void addHead(LIST& L, NODE* new_ele);
void Input(LIST& L);
void Output(LIST L);
long Sum(LIST L);

void Init(LIST& L)
{
	L.pHead = NULL;
	L.pTail = NULL;
}

NODE* getNode(int x)
{
	NODE* p;
	p = new NODE;
	if(p == NULL)
		return NULL;

	p->Info = x;
	p->pNext = NULL;

	return p;
}

void addHead(LIST& L, NODE* new_ele)
{
	if(L.pHead == NULL)
	{
		L.pHead = new_ele;
		L.pTail = L.pHead;
	}
	else
	{
		new_ele->pNext = L.pHead;
		L.pHead = new_ele;
	}
}

void Input(LIST& L)
{
	int n;
	printf("\nNhap so luong node: ");
	scanf("%d", &n);

	Init(L);
	for(int i = 1; i <= n; i++)
	{
		int x;
		printf("\nNhap 1 so nguyen: ");
		scanf("%d", &x);
		NODE* p = getNode(x);
		addHead(L, p);
	}
}

void Output(LIST L)
{
	for(NODE* p = L.pHead; p != NULL; p = p->pNext)
	{
		printf("%4d", p->Info);
	}
}

long Sum(LIST L)
{
	long s = 0;
	for(NODE*p = L.pHead; p != NULL; p = p->pNext)
	{
		s = s + p->Info;
	}
	return s;
}
int main()
{
	LIST lst;
	Input(lst);
	Output(lst);
	long kq = Sum(lst);
	printf("\nTong cac node: %ld", kq);

	getch();
	return 0;
}

Line 17: error: conio.h: No such file or directory
Line 15: warning: useless storage class specifier in empty declaration
Line 18: error: expected ';', ',' or ')' before '&' token
Line 20: error: expected ';', ',' or ')' before '&' token
Line 21: error: expected ';', ',' or ')' before '&' token
Line 25: error: expected ';', ',' or ')' before '&' token
In function 'getNode':
Line 34: error: 'new' undeclared (first use in this function)
Line 34: error: (Each undeclared identifier is reported only once
Line 34: error: for each function it appears in.)
Line 34: error: expected ';' before 'NODE'
t.c: At top level:
Line 44: error: expected ';', ',' or ')' before '&' token
Line 58: error: expected ';', ',' or ')' before '&' token
In function 'Output':
Line 77: error: 'for' loop initial declaration used outside C99 mode
In function 'Sum':
Line 86: error: 'for' loop initial declaration used outside C99 mode