[Compiling bbs.c]
bbs.c: In function `Import_post':
bbs.c:3414: warning: implicit declaration of function `haspc'
  [Compiling more.c]
more.c: In function `printacbar':
more.c:382: warning: unused variable `x'
more.c:382: warning: unused variable `y'
  [Compiling bm.c]
bm.c: In function `clubmember':
bm.c:549: warning: `head' might be used uninitialized in this function
bm.c:549: warning: `start' might be used uninitialized in this function

这几个warning该如何搞掉呢？
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FROM 218.11.217.*