error LNK2001: unresolved external symbol

soc.obj : error LNK2001: unresolved external symbol __imp__WSAGetOverlappedResult@20
soc.obj : error LNK2001: unresolved external symbol __imp__WSAWaitForMultipleEvents@20
soc.obj : error LNK2001: unresolved external symbol __imp__WSAGetLastError@0
soc.obj : error LNK2001: unresolved external symbol __imp__WSASend@28
soc.obj : error LNK2001: unresolved external symbol __imp__WSACreateEvent@0
soc.obj : error LNK2001: unresolved external symbol __imp__connect@12
soc.obj : error LNK2001: unresolved external symbol __imp__htons@4
soc.obj : error LNK2001: unresolved external symbol __imp__inet_addr@4
soc.obj : error LNK2001: unresolved external symbol __imp__WSASocketA@24

등의 오류가 날때

VC의 Project Settign 메뉴에서
Link -> Object,Library module 에
ws2_32.lib를 넣어 주던가

아니면 소스중
#pragma comment(lib, "ws2_32");를 넣어 준다!!

결론적으로 라이브러리를 못찾아서 나는 오류이다