/in/foo.cc: In function 'int main()':
/in/foo.cc:21:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(e<0)e+=n; if(e>n-1)e-=n;
  ^~
/in/foo.cc:21:15: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if'
  if(e<0)e+=n; if(e>n-1)e-=n;
               ^~