Comparing input character and a String

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Yusuf Oguzhan Turgut
评论： Jan 2019-6-11
Hello, I am trying to design a GUI. In my GUI, Matlab gives 5 random characters and user will enter the same. I want to compare user's input and 5 characters that MATLAB gives for create a ratio called correction. correction ratio = how many characters are true / 5. For ex = if 1 character of MATLAB and user input is same, correction ratio = 1/5. I try to make this code but it gives error. How can i do that ?
function check_Callback(hObject, eventdata, handles)
% hObject handle to check (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
b1= get(handles.input,'String') % user's input
a1 = get(handles.q1,'String'); % 1st character of MATLAB's string
a2 = get(handles.q2,'String'); % 2nd character of MATLAB's string
a3 = get(handles.q3,'String'); % 3rd character of MATLAB's string
a4 = get(handles.q4,'String'); % 4th character of MATLAB's string
a5 = get(handles.q5,'String'); % 5th character of MATLAB's string
correction = 0;
for i = 1:5 %% this is for obtaining correction ratio.
if a(i)== char(b1(i))
correction = (correction + i)/5;
end
end
  2 个评论
Yusuf Oguzhan Turgut
Yusuf Oguzhan Turgut 2019-6-10
a =
5
b1 =
'$>-&\'
Undefined function or variable 'a'.
Error in guioguzhan>check_Callback (line 353)
if a(i)== char(b1(i))
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in guioguzhan (line 42)
gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)guioguzhan('check_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback.

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采纳的回答

Jan
Jan 2019-6-10
Of course a(1) and a1 are two completely different things. It is not clear, what the contents of b1 is, but maybe you want:
b1 = get(handles.input,'String') % user's input
a{1} = get(handles.q1, 'String'); % 1st character of MATLAB's string
a{2} = get(handles.q2, 'String'); % 2nd character of MATLAB's string
a{3} = get(handles.q3, 'String'); % 3rd character of MATLAB's string
a{4} = get(handles.q4, 'String'); % 4th character of MATLAB's string
a{5} = get(handles.q5, 'String'); % 5th character of MATLAB's string
correction = 0;
for i = 1:5 %% this is for obtaining correction ratio.
if a{i} == b1{i}
correction = (correction + i) / 5;
end
end
  4 个评论
显示 2更早的评论
Yusuf Oguzhan Turgut
Yusuf Oguzhan Turgut 2019-6-10
Thank you very much :) It helped me a lot :)
Jan
Jan 2019-6-11
"b1 is like /()=!" is not clear enough. Prefer proper Matlab syntax instead:
b1 = '/()=!'
b1 = "/()=!"
b1 = {'/()=!'}
Maybe this is secure:
b1c = cellstring(b1);
b1_firstChar = b1c{1}(1);

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