/in/foo.cc: In function 'int main()':
/in/foo.cc:12:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
 for(int i=n-1;i>=0;i--) 
 ^~~
/in/foo.cc:14:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  return 0;
  ^~~~~~
/in/foo.cc:10:9: warning: 'i' may be used uninitialized in this function [-Wmaybe-uninitialized]
 for(int i;i<5;i++)
         ^