Erases the window by painting it with blanks. The erase function
    acts on the stdscr window.

    Format

      #include  <curses.h>

      int erase();

      int werase  (WINDOW *win);

1 - Argument

 win

    A pointer to the window.

2 - Description

    Both the erase and werase functions leave the cursor at the
    current position on the terminal screen after completion; they
    do not return the cursor to the home coordinates of (0,0).

3 - Return Values

    OK                 Indicates success.
    ERR                Indicates an error.