/in/foo.cc: In function 'int main()':
/in/foo.cc:13:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(int i=1;i<=n;i++)
   ^~~
/in/foo.cc:21:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   cout<<sum;
   ^~~~