5. First C++ program, cont.

• 
      #include <iostream>
      int main()
      {
          std::cout << "Hello, World!";
          return 0;
      }
  
  

  Statement std::cout << "Hello, World!"; sends quoted string of characters to console output device, namely cout.

• Because cout is an object that comes from C++ standard library, it is prefixed by the namespace of the standard library, std::

• Our program communicates with cout by using stream output operator << in order to print text on computer screen.