foo.cc: In function ‘std::string PalindromicString(std::string)’:
foo.cc:11:9: warning: this ‘else’ clause does not guard... [-Wmisleading-indentation]
   11 |         else
      |         ^~~~
foo.cc:13:17: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘else’
   13 |                 for(int i=1;i<=half;i++){
      |                 ^~~