foo.cc: In function ‘int main()’:
foo.cc:19:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
   19 |         for(int i=1;i<=n;i++)
      |         ^~~
foo.cc:21:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘for’
   21 |                 cout<<sum;
      |                 ^~~~