Getting the “no type named cout in namespace std” even though I included iostream.

#include <iostream>


std::cout << "test" << std::endl;
bool running = true;
void test() { 
  while (running == true) {
    std::cout << "game runningn";

  }
}

here is my code.

I searched up the error and all I got were posts saying to include iostream in order to fix. In case this helps, this is on a second file, the first one is running fine.