calc.m

a calculator with plotter

set(handles.text1,'String',textString)

end
jj=0;
% --- Executes on button press in pushbutton13.
function pushbutton13_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton13 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

global jj
textString = get(handles.text1,'String');

if(strcmp(textString,'0.')==1)&(jj==0)
   set(handles.text1,'String','4') ;
else
textString =strcat(textString,'4');
set(handles.text1,'String',textString)

end
jj=0;
% --- Executes on button press in pushbutton14.
function pushbutton14_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton14 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textString = get(handles.text1,'String');
textString =strcat(textString,'/');
set(handles.text1,'String',textString)

% --- Executes on button press in pushbutton15.
function pushbutton15_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton15 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textString = get(handles.text1,'String');
% if(strcmp(textString,'0.')==1)
%    set(handles.text1,'String','0.') ;
% else
% [a b c] = strread(textString, '%f %c %f');
% clear ans;
% 
% switch b
%     case '*'
%         ans=a*c;
%     case '/'
%         if (c==0)
%             ans='Error Divided by zero';
%         else
%         ans=a/c;
%         end
%     case '-'
%         ans=a-c;
%     case '+'
%         ans=a+c;
%    
% end
ans =eval(textString);
set(handles.text1,'String',ans)

%end

% --- Executes on button press in pushbutton16.
function pushbutton16_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton16 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
set(handles.text1,'String','0.') ;



% --- Executes on button press in pushbutton17.
function pushbutton17_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton17 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textString = get(handles.text1,'String');
%strcmp(textString,'0.')
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','0.') ;
else
a = strread(textString, '%f');
a=0-a;
set(handles.text1,'String',a)
end



% --- Executes on button press in pushbutton18.
function pushbutton18_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton18 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global jj 
textString = get(handles.text1,'String');
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','0.') ;
   jj=1;
else
textString =strcat(textString,'.');
set(handles.text1,'String',textString)
end



% --- Executes on button press in pushbutton19.
function pushbutton19_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton19 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textString = get(handles.text1,'String');

if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','(') ;
else
textString =strcat(textString,'(');
set(handles.text1,'String',textString)
end
% --- Executes on button press in pushbutton20.
function pushbutton20_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton20 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
textString = get(handles.text1,'String');

if(strcmp(textString,'0.')==1)
   set(handles.text1,'String',')') ;
else
textString =strcat(textString,')');
set(handles.text1,'String',textString)
end



% --- Executes on button press in pushbutton21.
function pushbutton21_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton21 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global jj
textString = get(handles.text1,'String');

if(strcmp(textString,'0.')==1)&(jj==0)
   set(handles.text1,'String','0.') ;
else
    ss=char(textString);
    l=length(textString);
    textString=ss(1:l-1);
set(handles.text1,'String',textString)

end
jj=0;



% --- Executes on button press in pushbutton22.
function pushbutton22_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton22 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global shift
textString = get(handles.text1,'String');
 switch shift
     case 0
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','sin') ;
else
textString =strcat(textString,'sin');
set(handles.text1,'String',textString)
end
    case 1
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','asin') ;
else
textString =strcat(textString,'asin');
set(handles.text1,'String',textString)
end
        end

% --- Executes on button press in pushbutton23.
function pushbutton23_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton23 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global shift
textString = get(handles.text1,'String');
 switch shift
     case 0
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','cos') ;
else
textString =strcat(textString,'cos');
set(handles.text1,'String',textString)
end
    case 1
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','acos') ;
else
textString =strcat(textString,'acos');
set(handles.text1,'String',textString)
end
        end

% --- Executes on button press in pushbutton24.
function pushbutton24_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton24 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global shift
textString = get(handles.text1,'String');
 switch shift
     case 0
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','tan') ;
else
textString =strcat(textString,'tan');
set(handles.text1,'String',textString)
end
    case 1
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','atan') ;
else
textString =strcat(textString,'atan');
set(handles.text1,'String',textString)
end
        end


% --- Executes on button press in pushbutton25.
function pushbutton25_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton25 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global shift
textString = get(handles.text1,'String');
 switch shift
     case 0
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','log') ;
else
textString =strcat(textString,'log');
set(handles.text1,'String',textString)
end
    case 1
if(strcmp(textString,'0.')==1)
   set(handles.text1,'String','log10') ;
else
textString =strcat(textString,'log10');
set(handles.text1,'String',textString)
end
        end

% --- Executes on button press in pushbutton26.
function pushbutton26_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton26 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

global jj shift 

shift=1;