Borderou de evaluare (job #357897)

Compilare: user.cpp: In function ‘bool verif(std::string)’: user.cpp:29:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:31:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:25:12: warning: unused variable ‘j’ [-Wunused-variable] user.cpp:26:10: warning: unused variable ‘c’ [-Wunused-variable] user.cpp: In function ‘int main()’: user.cpp:43:12: warning: unused variable ‘dif’ [-Wunused-variable]