Mengapa Saya Mendapat Ralat 'Simbol Tidak Ditakrifkan' Semasa Mengumpul Kod C Mudah pada macOS?

#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    for (int i = 0; i < 10; i++)
    {
        cout << "hi";
        cout << endl;
    }

    return 0;
}

cc main.cpp

Undefined symbols for architecture x86_64:
  "std::cout", referenced from:
      _main in ccBdbc76.o
  "std::basic_ostream<char, std::char_traits<char> > &amp; std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> > &amp;, char const*)", referenced from:
      _main in ccBdbc76.o
  "std::basic_ostream<char, std::char_traits<char> > &amp; std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> > &amp;)", referenced from:
      _main in ccBdbc76.o
  "std::basic_ostream<char, std::char_traits<char> >::operator<< (std::basic_ostream<char, std::char_traits<char> > &amp; (*)(std::basic_ostream<char, std::char_traits<char> > &amp;))", referenced from:
      _main in ccBdbc76.o
  "std::ios_base::Init::Init()", referenced from:
      __static_initialization_and_destruction_0(int, int)in ccBdbc76.o
  "std::ios_base::Init::~Init()", referenced from:
      ___tcf_0 in ccBdbc76.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status

g++ main.cpp
clang++ main.cpp