Delete the character on the specified window at the current
    position of the cursor. The delch function operates on the stdscr
    window.

    Format

      #include  <curses.h>

      int delch();

      int wdelch  (WINDOW *win);

1 - Argument

 win

    A pointer to the window.

2 - Description

    All of the characters to the right of the cursor on the same line
    are shifted to the left, and a blank character is appended to the
    end of the line.

3 - Return Values

    OK                 Indicates success.
    ERR                Indicates an error.