Another comment line. Remember, the compiler ignores anything following // (up until the end of the line), or /*comment something */ (everything between /* and */), so you can say whatever you want on these lines.
A simple program
Again comment
//include this file for cout
#include <iostream.h>
int main()
{
//print out the text string,
//"Hello, World!"
cout << "Hello, World!"
  << endl;
return 0;
}