Read from text file and make a dictionary text file - c++

Question

I want to read a text file and store new words in linked list. From this linked list I want to write a dictionary file with new words. I don't know why my code don't run. Can anyone help me?
p/s: when i run debug it found this when store vector element to new_node->word
Error
This is my code
#include <iostream>
#include <string>
#include <vector>
#include <fstream>
#include <sstream>
#include <cstring>
using namespace std;
typedef struct dictionary
{ string word;
int line;
int page;
struct dictionary* next;
} node;
int main()
{
node* Head = NULL;
ifstream file("filetest.txt");
if(file.fail())
cout << "Loi mo file! "<<endl;
string temp;
int cpage = 1,cline = 1;
while(getline(file,temp))
{
stringstream spliter;
spliter << temp;
vector<string> result;
while(!spliter.eof())
{
string str;
spliter >> str;
result.push_back(str);
}
for(size_t i = 0;i != result.size();i++)
{
if(Find(Head,result[i])==0)
{
Append(&Head,result[i],cline,cpage);
}
}
cline++;
if(cline == 25)
cpage++;
}
file.close();
;
ofstream outfile("test.txt");
node* p = Head;
while(p != NULL)
{
outfile << p->word <<","<<p->page<<"-"<<p->line<<endl;
p=p->next;
}
}
Append( add member to linked list)
void Append(node** First,string &newstr,int newl,int newp)
{
node* new_node = (node*)malloc(sizeof(node));
node* last = *First;
new_node->word=newstr;
new_node->line=newl;
new_node->page=newp;
new_node->next = 0;
if(*First == 0)
{
*First = new_node;
return;
}
while(last->next != 0)
{
last = last->next;
}
last->next = new_node;
return;
}
Find( check if a word is new or not)
int Find(node* head,string &tumoi)
{
node* current = head;
while(current != 0)
{
if(current->word == tumoi)
return 1;
current = current->next;
}
return 0;
}

Answer 1

You should not use malloc with C++ types. It does not properly initialize them.
Your node struct contains a std::string which needs to have its constructor called to be properly initialized.
When you do this
node* new_node = (node*)malloc(sizeof(node));
new_node->word=newstr;
The new_node->word is not initialized and can contain pointers to nowhere.
You should do
node* new_node = new node();
new_node->word=newstr;
instead.