% Determine a number between two input limits by answering some \
% questions of comparison
disp('Enter a low number and high number and have a player choose a number');
disp('between those limits.  Then have the player answer the questions');
disp('truthfully.  The program returns the chosen number when enough');
disp('information is gathered.');
disp('');
low = input('Enter low number: ');
high = input('Enter high number: ');
while low < high
   question = ['So far (' num2str(low) '-' num2str(high) \
      ').  Is your number at least...' int2str(ceil((low+high)/2)) '? '];
   number = input(question,'s');

   if number == 'y' | number == 'Y'
      low = ceil((low+high)/2);
   else
      high = ceil((low+high)/2)-1;
   end
end
if low > high
   disp('You can''t do that!');
else
   disp(['Your number is...' int2str(low)]);
end