/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<=text.size();i++)
              ~^~~~~~~~~~~~~
/in/foo.cc:32:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(i!=text.size())
       ~^~~~~~~~~~~~~