Compilare: user.cpp: In function ‘short int Simil(std::string*, std::string*)’: user.cpp:13:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short i = 0; i < c1->length(); i++) ^ user.cpp:15:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short i = 0; i < c2->length(); i++) ^ user.cpp:17:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short i = 0; i < c1->length(); i++) ^ user.cpp:19:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(short j = 0; j < c2->length(); j++) ^