Compilare: user.cpp: In function 'std::vector<int, std::allocator<int> > get(std::string)': user.cpp:18: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'bool chkGt(std::string, std::string)': user.cpp:31: warning: comparison between signed and unsigned integer expressions user.cpp:36: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'bool eval(std::string)': user.cpp:44: warning: comparison between signed and unsigned integer expressions user.cpp:79: warning: comparison between signed and unsigned integer expressions user.cpp:80: warning: comparison between signed and unsigned integer expressions user.cpp:82: warning: comparison between signed and unsigned integer expressions user.cpp:83: warning: comparison between signed and unsigned integer expressions /tmp/ccxSg94h.o: In function `main': user.cpp:(.text+0xf60): warning: the `gets' function is dangerous and should not be used.