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Test Your Knowledge in Computers #525
Difficulty: Medium
In ASCII, to convert between uppercase and lowercase versions, you only need to invert the second bit (0 for uppercase, 1 for lowercase).
True or False?
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curs_delch(3curses) [opensolaris man page]

curs_delch(3CURSES)					     Curses Library Functions					       curs_delch(3CURSES)

NAME
curs_delch, delch, wdelch, mvdelch, mvwdelch - delete character under cursor in a curses window SYNOPSIS
cc [ flag ... ] file ... -lcurses [ library ... ] #include <curses.h> int delch(void); int wdelch(WINDOW *win); int mvdelch(int y, int x); int mvwdelch(WINDOW *win, int y, int x); DESCRIPTION
With these routines the character under the cursor in the window is deleted; all characters to the right of the cursor on the same line are moved to the left one position and the last character on the line is filled with a blank. The cursor position does not change (after moving to y, x, if specified). This does not imply use of the hardware delete character feature. RETURN VALUES
All routines return the integer ERR upon failure and an integer value other than ERR upon successful completion. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |Unsafe | +-----------------------------+-----------------------------+ SEE ALSO
curses(3CURSES), attributes(5) NOTES
The header <curses.h> automatically includes the headers <stdio.h> and <unctrl.h>. Note that delch(), mvdelch(), and mvwdelch() may be macros. SunOS 5.11 31 Dec 1996 curs_delch(3CURSES)

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