Possible Duplicate:
undefined reference to `WinMain@16'
Ive been working on a circular, double linked list. Decided to create a class and use a header. I'm new to C++ so i checked to see how to implement it. I'm not sure if i correctly implemented the struct node within the list.
After compiling the Clist.cpp file, i received this error.
(.text+0xd2): undefined reference to `WinMain@16'
collect2: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 1 seconds)
1 errors, 0 warnings
d:\codeblocks\mingw\bin\..\lib\gcc\mingw32\4.4.1\..\..\..\libmingw32.a(main.o):main.c|| undefined reference to `WinMain@16'|
--
#ifndef CLIST_H
#define CLIST_H
struct Node {
char data;
Node *prev, *next;
Node (char d, Node *p, Node *n): data(d), prev(p), next(n)
{
if(p) prev->next = this;
if(n) next->prev = this;
}
};
class Clist
{
public:
Clist(char);
virtual ~Clist();
Node *head; // current node that is being pointed to
int size;
bool isEmpty();
void addNodeBefore(char); // inserted before head
void addNodeAfter(char); // inserted after head
void addNodeBeforeData(char, Node*);// Same as above, inserted before/after a specific node
void addNodeAfterData(char, Node*);
void out(bool); // Prints the list, true starts from beginning, false starts from end
void setData(char);
void setPrev(Node*);
void setNext(Node*);
bool findData(char); // Searches through the list to find the char
void deleteData(char, bool);
};
#endif // CLIST_H
--
#include "Clist.h"
#include <string.h>
#include <iostream>
using namespace std;
Clist::Clist(char d)
{
head = new Node(d, NULL, NULL);
head->next = head->prev = head;
size = 1;
}
Clist::~Clist()
{
Node *tmp = this->head;
Node *temp;
while(tmp->prev)
tmp = tmp->prev;
while(tmp)
{
temp = tmp->next;
delete tmp;
tmp = temp;
}
tmp = temp = NULL;
}
bool Clist::isEmpty()
{ return (this->size == 0);}
void Clist::addNodeBefore(char d)
{
Node *n = head;
Node *p = head->prev;
Node *temp = new Node (d, p, n);
size++;
//cout << "added: " << temp->data << " before: "
// << temp->prev->data << " after: " << temp->next->data << endl;
}
void Clist::addNodeAfter(char d)
{
Node *n = head->next;
Node *p = head;
Node *temp = new Node (d, p, n);
size++;
//cout << "added: " << temp->data << " before: "
// << temp->prev->data << " after: " << temp->next->data << endl;
}
void Clist::out(bool dir) // True to traverse next, false to traverse prev
{
if (dir)
{
Node *tmp = head;
do{
cout << tmp->data;
tmp = tmp->next;
}while(tmp != head);
}else
{
Node *tmp = head;
do{
cout << tmp->data;
tmp = tmp->prev;
}while(tmp != head);
}
cout << endl;
}
void Clist::setData(char Data)
{
this->head->data = Data;
}
void Clist::setPrev(Node* Prev)
{
this->head->prev = Prev;
}
void Clist::setNext(Node* Next)
{
this->head->next = Next;
}
bool Clist::findData(char search)
{
int counter = 0;
Node *tmp = head;
while(tmp->next != head)
{
if(tmp->data == search)
counter++;
tmp = tmp->next;
}
if (counter > 0)
{
cout << "'" << search << "' was found " << counter << " time(s)" << endl;
return true;
}else
{
cout << "'" << search << "' was not found" << endl;
return false;
}
}
void Clist::deleteData(char search, bool all) // If true, it will delete all nodes with the same search
{ // If false, it will delete the first Node only
Node *tmp = head;
while(tmp)
{
if(tmp->data == search)
{
cout << "Deleting " << search << endl;
tmp->prev->next = tmp->next;
tmp->next->prev = tmp->prev;
if (false)
return;
}
tmp = tmp->next;
}
}
--
#include <string.h>
#include <iostream>
#include "Clist.h"
using namespace std;
int main(int argc, char* argv[])
{
char s[]="abcfdefghijklmgnopqrsatuvwxyz";
Clist *list; // ptr to head of list
Node *curr; // ptr to current node of the list
// call constructor and initialize first Node
list = new Clist(s[0]);
for(size_t i=1; i < strlen(s); i++) // create the rest of the linked list
list->addNodeAfter(s[i]);
list->out(true);
list->out(false);
cin.get();
return 0;
}
