How can I save value of a variable when calling the same function again?

Hello,

I am doing a tictactoe using GUI game and want to show which round is currently playing ex 'Round 1'. This is what I have

round = 0;
if round == 0 
set(handles.text6, 'String', 'Round 1') 
  round = 1; 
elseif round == 1 
 set(handles.text6, 'String', 'Round 2')
  round == 2; 
elseif round == 2 
  set(handles.text6, 'String', 'Round 3')
  round == 3; 
end

the problem is that every time I call the function, round is set to zero so it will always be 'Round 1'. How can I keep the value of round when calling the same function again?

Thank you!

Answer 1

[Azzi Abdelmalek]

Because in the first line you wrote

round=0

You can declare the variable round as persistent

function -------
persistent round
if isempty(round)
 round=0
end
% your code

[Jay]

Thank you so much it worked. I appreciate it.

Answer 2

[Walter Roberson]

persistent round
if isempty(round); round = 0; end

How do you plan to indicate that you need to reset round to 0?

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F