/in/foo.cc: In function 'int main()':
/in/foo.cc:21:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<str.length();i++)
              ~^~~~~~~~~~~~~
/in/foo.cc:32:4: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
    else
    ^~~~
/in/foo.cc:34:5: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
     word="";
     ^~~~