Compilare: user.cpp: In function ‘void init(AFD&)’: user.cpp:16: warning: unused variable ‘nf’ user.cpp:16: warning: unused variable ‘nt’ user.cpp: In function ‘int aparitii(AFD, std::string)’: user.cpp:32: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int prefix(AFD, std::string)’: user.cpp:44: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘void adaug(AFD&, std::string)’: user.cpp:57: warning: comparison between signed and unsigned integer expressions user.cpp:56: warning: unused variable ‘x’ user.cpp: In function ‘void stergere(AFD&, std::string)’: user.cpp:75: warning: comparison between signed and unsigned integer expressions