Matlab Programming Please help Thanks Make a GUI with a call

Matlab Programming. Please help. Thanks

Make a GUI with a callback function to show a character of the alphabet, and change it according to a slider input.
Display a character of the alphabet on a figure as a text element, starting with \'A\'. Also show a slider. As the user moves the slider from left to right, show another character, in increasing order, up to \'Z\'. Show it in decreasing order if moved from right to left. You may want to investigate \"SliderStep\" as well as the \"Min\" and \"Max\" of the slider.
Turn in the MATLAB program, the callback function, and a screen capture of the figure showing the first letter of your last name.

Solution

function varargout = PB(varargin)
% PB MATLAB code for PB.fig
%      PB, by itself, creates a new PB or raises the existing
%      singleton*.
%
%      H = PB returns the handle to a new PB or the handle to
%      the existing singleton*.
%
%      PB(\'CALLBACK\',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in PB.M with the given input arguments.
%
%      PB(\'Property\',\'Value\',...) creates a new PB or raises the
%      existing singleton*. Starting from the left, property value pairs are
%      applied to the GUI before PB_OpeningFcn gets called. An
%      unrecognized property name or invalid value makes property application
%      stop. All inputs are passed to PB_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE\'s Tools menu. Choose \"GUI allows only one
%      instance to run (singleton)\".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help PB

% Last Modified by GUIDE v2.5 05-Nov-2016 11:20:02

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct(\'gui_Name\',       mfilename, ...
                   \'gui_Singleton\', gui_Singleton, ...
                   \'gui_OpeningFcn\', @PB_OpeningFcn, ...
                   \'gui_OutputFcn\', @PB_OutputFcn, ...
                   \'gui_LayoutFcn\', [] , ...
                   \'gui_Callback\',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT

% --- Executes just before PB is made visible.
function PB_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to PB (see VARARGIN)

% Choose default command line output for PB
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes PB wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = PB_OutputFcn(hObject, eventdata, handles)
% varargout cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
Alpha=\'hi\'

% --- Executes on slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject    handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,\'Value\') returns position of slider
%        get(hObject,\'Min\') and get(hObject,\'Max\') to determine range of slider
sliderValue = get(handles.slider1,\'Value\') );
alpha=num2str(sliderValue);
set(handles.text2,\'string\',alpha);
%set(handles.text1,\'String\', sliderValue);

% --- Executes during object creation, after setting all properties.
function slider1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,\'BackgroundColor\'), get(0,\'defaultUicontrolBackgroundColor\'))
    set(hObject,\'BackgroundColor\',[.9 .9 .9]);
end