function varargout = zadatak5(varargin)
% ZADATAK5 M-file for zadatak5.fig
%      ZADATAK5, by itself, creates a new ZADATAK5 or raises the existing
%      singleton*.
%
%      H = ZADATAK5 returns the handle to a new ZADATAK5 or the handle to
%      the existing singleton*.
%
%      ZADATAK5('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in ZADATAK5.M with the given input arguments.
%
%      ZADATAK5('Property','Value',...) creates a new ZADATAK5 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before zadatak5_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to zadatak5_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

% Copyright 2002-2003 The MathWorks, Inc.

% Edit the above text to modify the response to help zadatak5

% Last Modified by GUIDE v2.5 17-Dec-2004 09:10:52

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @zadatak5_OpeningFcn, ...
                   'gui_OutputFcn',  @zadatak5_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 zadatak5 is made visible.
function zadatak5_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 zadatak5 (see VARARGIN)

% Choose default command line output for zadatak5
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes zadatak5 wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = zadatak5_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;



function txt1_Callback(hObject, eventdata, handles)
% hObject    handle to txt1 (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,'String') returns contents of txt1 as text
%        str2double(get(hObject,'String')) returns contents of txt1 as a double


% --- Executes during object creation, after setting all properties.
function txt1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to txt1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function txt2_Callback(hObject, eventdata, handles)
% hObject    handle to txt2 (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,'String') returns contents of txt2 as text
%        str2double(get(hObject,'String')) returns contents of txt2 as a double


% --- Executes during object creation, after setting all properties.
function txt2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to txt2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function txt3_Callback(hObject, eventdata, handles)
% hObject    handle to txt3 (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,'String') returns contents of txt3 as text
%        str2double(get(hObject,'String')) returns contents of txt3 as a double


% --- Executes during object creation, after setting all properties.
function txt3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to txt3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end



function txt4_Callback(hObject, eventdata, handles)
% hObject    handle to txt4 (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,'String') returns contents of txt4 as text
%        str2double(get(hObject,'String')) returns contents of txt4 as a double


% --- Executes during object creation, after setting all properties.
function txt4_CreateFcn(hObject, eventdata, handles)
% hObject    handle to txt4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end


% --- Executes on button press in cmd1.
function cmd1_Callback(hObject, eventdata, handles)

k3=str2num(get(handles.txt1,'String')); 
k2=str2num(get(handles.txt2,'String')); 
k1=str2num(get(handles.txt3,'String')); 
l=str2num(get(handles.txt4,'String'));
x=-10:0.1:10;
y=[k3 k2 k1 l];
plot(x,polyval(y,x))
korijeni=roots(y);
handle=findobj(gcf,'Tag','lblr');
set(handle,'String',korijeni)

% hObject    handle to cmd1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)