/in/foo.cc: In function 'int Search(int*, int, int)':
/in/foo.cc:5:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(int i=0;i<na;i++)
  ^~~
/in/foo.cc:8:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   return -1;//没有该数
   ^~~~~~