// This way you make comments
/* or 
   this 
   way */

// compile program with the command: g++ myfirstprog.cc -o myfirstprog
// (g++ is the c++ compiler by gnu (gcc))
// do ls -l and see that the executable myfirstprog was created
// Run program with command: ./myfirstprog
// 
// Now comment the line with std::cout and uncomment the line with cout
// try to compile
// Now uncomment the line with using namespace std

// In the include section we include the header files we need. Header
// files gives a description of what methods the classes have so that
// the compiler knows that the method exists and what arguments it takes

// STL (standard template library for C++)
#include <iostream>

//using namespace std; // means that we don't have to write std::cout, but can 
// just write cout

int main() // main function called at the beginning of program
{
  // write Hello world
  std::cout << "Hello world" << std::endl;
  //  cout << "Hello world" << endl;

  // remember to finish all lines with ;

  return 0; // means that execution went well
}