Borderou de evaluare (job #508845)

Compilare: user.cpp: In function 'int verificare(std::string, std::string)': user.cpp:14:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:17:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'int main()': user.cpp:57:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:61:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:65:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]