+---+---+     +---+---+     +----+------+

        +---+---+     +---+---+     +----+------+     

    Note that only the head is sufficient to represent 

    the whole list. We can traverse the complete 

    list by following the next pointers. */

    return 0;

}

Computer Programing language

• Programming languages are notations for describing computations to people and to machines.
• Computer programs are written in three types of language
• High level languages : closer to problem domain , so problems are easier to solve
• Machine language: complex , more efficient and faster