Hi!
1st question:
  In regular C, you have the <stdio.h> functions for reading/writing to stdio; 
printf(), scanf(), etc...
  In C++, you have cin/cout and the overridden '>>' and '<<' operators.
  What does ObjC have (besides NSLog() anyway) that C/C++ doesn't?
  I'm guessing... zilch. You have to use the standard C libraries, right? Or is 
there an OO way of reading/writing to stdio (and stderr) from a console app? Or 
use ObjC++...


2nd question:
  Can a console app control the text 'cursor' in Terminal.app's window solely 
through stdio? (i.e. are there control codes that clear the screen, locate the 
cursor at some x,y location, set the text color/brightness (I know the man page 
reader can, at the very least, change the text brightness), position the cursor 
at the beginning/end of a line, etc...) Or do apps like vim, emacs, pico, 
etc... use custom machine-language calls to the darwin core to do this?
  If it helps, under Terminal.app's Prefs | Text, I have "Use bold fonts", 
"Allow blinking text" and "Display ANSI colors" all checked, and under Prefs | 
Window I have window size set for 80x24 with unlimited scrollback, and under 
Prefs | Advanced, I have "Declare terminal as:" set to xterm-color, "Paste 
newlines as carriage returns" and "Scroll to bottom on input" checked.

3rd question:
  Are all the C libraries (with the possible exception of <stdio.h>) available 
in iOS 3 and later?

4th question:
  Are there any plans to include NumberFormatter and DateFormatter in iOS 5 (or 
later)? If not, what's the recommended way of filtering/displaying/validating 
input in a UITextField that I want to only have valid floating-point values 
when I go to do calculations on them.




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