Compilare: user.cpp: In function 'void add(std::vector<int, std::allocator<int> >*, std::vector<int, std::allocator<int> >)': user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:29: warning: comparison between signed and unsigned integer expressions user.cpp:31: warning: comparison between signed and unsigned integer expressions user.cpp:33: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'void mult(std::vector<int, std::allocator<int> >*, std::vector<int, std::allocator<int> >)': user.cpp:45: warning: comparison between signed and unsigned integer expressions user.cpp:47: warning: comparison between signed and unsigned integer expressions user.cpp:54: warning: comparison between signed and unsigned integer expressions user.cpp: In function 'int main()': user.cpp:117: warning: comparison between signed and unsigned integer expressions user.cpp:103: warning: unused variable 'j' user.cpp: In function 'int bin(std::vector<long int, std::allocator<long int> >, long int, int, int)': user.cpp:24: warning: control reaches end of non-void function