Compilare: user.cpp: In function 'std::vector<int, std::allocator<int> > termen()': user.cpp:48: warning: comparison between signed and unsigned integer expressions user.cpp:49: warning: comparison between signed and unsigned integer expressions user.cpp:58: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'std::vector<int, std::allocator<int> > expr()': user.cpp:76: warning: comparison between signed and unsigned integer expressions user.cpp:91: warning: comparison between signed and unsigned integer expressions user.cpp:92: warning: comparison between signed and unsigned integer expressions user.cpp:95: warning: comparison between signed and unsigned integer expressions user.cpp:96: warning: comparison between signed and unsigned integer expressions user.cpp:104: warning: comparison between signed and unsigned integer expressions user.cpp:111: warning: comparison between signed and unsigned integer expressions user.cpp:117: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:125: warning: unused variable 'j' /tmp/cchzBJG8.o: In function `main': user.cpp:(.text+0x715): warning: the `gets' function is dangerous and should not be used.