socket程式設計時出現如下的error：

||=== 生成: Debug in ccc (compiler: GNU GCC Compiler) ===|
obj\Debug\main.o||In function `[email protected]':|
D:\code\ccc\main.cpp|16|undefined reference to `[email protected]'|
obj\Debug\main.o||In function `main':|
D:\code\ccc\main.cpp|28|undefined reference to `[email protected]
 
'|
D:\code\ccc\main.cpp|30|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|33|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|40|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|41|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|43|undefined reference to `
 
[email protected]'|
D:\code\ccc\main.cpp|49|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|56|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|62|undefined reference to `[email protected]'|
D:\code\ccc\main.cpp|62|undefined reference to `[email protected]
 
'|
||=== Build 失敗了: 11 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

解決辦法：把libws2_32.a加到連結器中