Borderou de evaluare (job #508848)

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:16:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp: In function 'int main()': user.cpp:56:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:60:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:60:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] user.cpp:64:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]