|Syntax||REPLY [([#wind,] keys$)]|
The function REPLY reads a character from the keyboard (with the text cursor in a window enabled).
If keys$ was specified, then REPLY will only stop if the pressed key was listed in keys$, this is case-sensitive so <a> and <SHIFT><A> are different.
The return of REPLY is the position of the pressed key in keys$. REPLY behaves very differently if there is no keys$ supplied. The return will be the code of the pressed key, just like CODE(INKEY$(-1)) except that combinations of <ALT> and any other key are recognised - if <ALT> was held and any other key pressed, REPLY returns 256 minus the code of that key.
Another version of the game also shown at ASK:
100 CLS: x1 = 0: x2 = 100 110 PRINT "I am going to find out a number" 120 PRINT "from"!x1!"to"!x2!"which only you know." 130 PRINT "Press <S> if the proposed number is too small," 140 PRINT "<L> if it's too large or <Y> if it's the result." 150 REPeat find_out 160 x=(x1+x2) DIV 2 170 PRINT x;"? "; 180 answer = REPLY("sSlLyY") 190 SELect ON answer 200 =1,2: x1 = x + 1: PRINT "too small" 210 =3,4: x2 = x - 1: PRINT "too large" 220 =5,6: EXIT find_out 230 END SELect 240 END REPeat find_out 250 PRINT "ok"\"I am the best."