/in/foo.cc: In function 'int main()':
/in/foo.cc:46:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (j = 0; j<name.size(); j++) {
                ~^~~~~~~~~~~~
/in/foo.cc:52:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (j == name.size()-1) {
        ~~^~~~~~~~~~~~~~~~
/in/foo.cc:64:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (j = 0; j<address.size(); j++) {
                ~^~~~~~~~~~~~~~~
/in/foo.cc:70:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (j == address.size()-1) {
        ~~^~~~~~~~~~~~~~~~~~~
/in/foo.cc:78:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < output.size(); i++) {
                  ~~^~~~~~~~~~~~~~~
/in/foo.cc:56:34: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
     output.push_back (address[pos]);
                                  ^