[완료] c++ LNK2019 에러가 떠요 ㅠㅠ.
안녕하세요.
학교 과제물 때문에 template로 doubled link list 클래스를 구현할려고 합니다.
그런데 c++ 라고는 hello world 밖에 않해봐서 도통 이..LNK2019 에러를 어떻게 고쳐야 잡을수 있는지 모르겠습니다
도와주세요 ㅠ
(task2.h)
#ifndef _TASK2_H #define _TASK2_H #include <iostream> #include <string> using namespace std; template<typename T> class task2 { struct node { T data; node* prev; node* next; node(T t, node* p, node* n) : data(t), prev(p), next(n) {} }; node* head; node* tail; public: task2() : head( NULL ), tail ( NULL ) {} template<int N> task2( T (&arr) [N]) : head( NULL ), tail ( NULL ) { for( int i(0); i != N; ++i) push_back(arr[i]); } bool empty() const { return ( !head || !tail ); } operator bool() const { return !empty(); } void push_back(T); void push_front(T); T pop_back(); T pop_front(); ~task2() { while(head) { node* temp(head); head=head->next; delete temp; } } }; #endif
(task2.cpp)
#include <iostream> #include <string> #include "task2.h" using namespace std; template<typename T> void task2<T>::push_back(T data) { tail = new node(data, tail, NULL); if( tail->prev ) tail->prev->next = tail; if( empty() ) head = tail; } template <typename T> void task2<T>::push_front(T data) { head = new node(data, NULL, head); if( head->next ) head->next->prev = head; if( empty() ) tail = head; } template<typename T> T task2<T>::pop_back() { if( empty() ) throw("double_linked : list empty"); node* temp(tail); T data( tail->data ); tail = tail->prev ; if( tail ) tail->next = NULL; else head = NULL ; delete temp; return data; } template<typename T> T task2<T>::pop_front() { if( empty() ) throw("double_linked : list empty"); node* temp(head); T data( head->data ); head = head->next ; if( head ) head->prev = NULL; else tail = NULL; delete temp; return data; }
(main.cpp)
#include <iostream> #include <string> #include "task2.h" using namespace std; int main(int argc, char* argv[]) { int arr[] = { 4, 6, 8, 32, 19 } ; task2<int> dlist ( arr ); dlist.push_back( 11 ); dlist.push_front( 100 ); while( dlist ) std::cout << dlist.pop_back() << " "; std::cout << "\n"; std::string arr2[] = { "a", "bb", "cc", "ddd", "eeee" } ; task2<std::string> dlist1 ( arr2 ); dlist1.push_back( "gg" ); dlist1.push_front( "ff" ); while( dlist1 ) std::cout << dlist1.pop_back() << " "; }
컴파일 시..
main.obj : error LNK2019: unresolved external symbol "public: class std::basic_string,class std::allocator > __thiscall task2,class std::allocator > >::pop_back(void)" (?pop_back@?$task2@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@XZ) referenced in function _main
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall task2,class std::allocator > >::push_front(class std::basic_string,class std::allocator >)" (?push_front@?$task2@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEXV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) referenced in function _main
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall task2,class std::allocator > >::push_back(class std::basic_string,class std::allocator >)" (?push_back@?$task2@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@@QAEXV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) referenced in function _main
main.obj : error LNK2019: unresolved external symbol "public: int __thiscall task2::pop_back(void)" (?pop_back@?$task2@H@@QAEHXZ) referenced in function _main
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall task2::push_front(int)" (?push_front@?$task2@H@@QAEXH@Z) referenced in function _main
main.obj : error LNK2019: unresolved external symbol "public: void __thiscall task2::push_back(int)" (?push_back@?$task2@H@@QAEXH@Z) referenced in function _main
이런 에러가 뜹니다 흑흑..orz
template는 소스와 해더를 분리해서 넣으면
template는 소스와 해더를 분리해서 넣으면 컴파일이 안된다는군요.;;
결국 task2.cpp에 있는내용을 task2.h 에 넣고 컴파일 했습니다 ..;;
템플릿 분리 컴파일은 지금 현재는 불가능합니다.
export 키워드가 그런 (?)목적으로 만든건데
http://moogi.new21.org/tc/293?category=4
지금 구현한 컴파일러가 거의 없음
즐린
댓글 달기