/in/foo.cc: In function 'void HeBin(int*, int)':
/in/foo.cc:25:8: warning: statement has no effect [-Wunused-value]
   for(j; a[j]>a[j-1] && j<n; j++)
        ^
/in/foo.cc:27:8: warning: statement has no effect [-Wunused-value]
   for(j+1; a[j]>a[j-1] && j<n; j++)
       ~^~