Move the cursor to coordinates (y,x) and delete the character
    on the specified window. The mvdelch function acts on the stdscr
    window.

    Format

      #include  <curses.h>

      int mvdelch  (int y, int x);

      int mvwdelch  (WINDOW *win, int y, int x);

1  –  Arguments

 win

    A pointer to the window.

 y

    A window coordinate.

 x

    A window coordinate.

2  –  Description

    Each of the following characters on the same line shifts to the
    left, and the last character becomes blank.

3  –  Return Values

    OK                 Indicates success.
    ERR                Indicates that deleting the character would
                       cause the screen to scroll illegally. For more
                       information, see the scrollok function.