/in/foo.c: In function 'QuickSort':
/in/foo.c:21:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
     if (left >= right)
     ^~
/in/foo.c:23:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  int i=left, j=right;
  ^~~