Hi, I am trying to run a C++ code from my terminal but keep running into problems. For instance, when I tried to run a basic Hello World code: gcc hello_world.cpp, I end up with the following error message: /usr/bin/ld: Undefined symbols: std::ios_base::Init::Init() std::ios_base::Init::~Init() std::cout std::basic_ostream<char, std::char_traits<char> >& std:perator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*) ___gxx_personality_v0 collect2: ld returned 1 exit status Even when I run a dummy code that does absolutely nothing, I get an error saying Undefined symbols: _main. I don't know what to do. Any suggestions? Thanks!