Compilare: user.cpp: In function ‘int getKey(std::string)’: user.cpp:32: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int addHash(std::string)’: user.cpp:43: warning: no return statement in function returning non-void user.cpp: In function ‘int existHash(std::string, int)’: user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void dinamica()’: user.cpp:77: warning: comparison between signed and unsigned integer expressions