用MATLAB做一个计算器_包括加减乘除_平方_清空等功能

广西科技大学MATLAB课程设计说明书课题：设计简易计算器开发环境：MATLABGUIDE作者：系别：专业：时间：实验目的:1、熟悉MATLAB的主要控件使用方法。2、熟悉MATLAB的GUI设计流程。实验环境:编程软件：MATLAB7.0实验内容与结果：使用MATLAB的GUI接口设计一个简单的计算器。效果图:一、布局GUI。1.打开Matlab，输入Guide回车或者在工具栏上点击图标出现Guide窗口：2.然后双击“BlankGUI(Default)”出现GUI窗口3.添加按钮4.根据按钮的作用及视觉效果做一定的修改把按钮的字符串大小、颜色进行设置，对按钮的位置进行排布，尽量使按钮集中在静态文本框下面。最终设置的静态文本框为白色，其他按钮均为分红色。5.保存、添加功能函数把做好的按钮及静态文本框保存后自动弹出Editor的M文本，对然后对相应的pushbutton添加功能函数。以下是相应按钮的功能函数。（1）数字按键编写。在functionpushbutton1_Callback(hObject,eventdata,handles）下输入：textString=get(handles.text1,'String');textString=strcat(textString,'0');set(handles.text1,'String',textString)这是使用句柄handles指向对象text1，并以字符串形式来存储数据文本框text1的内容，并存储数个“0”，然后由set(handles.text1,'String','textString'在text1中输出。同理，分别在functionpushbutton2~10_Callback(hObject,eventdata,handles）下给1~9数字按键下编写此类程序。（2）.符号键：functionpushbutton12_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String');textString=strcat(textString,'+');set(handles.text1,'String',textString)strcat的作用是将两个字符串连接起来，就是在已输入的存储数据textString后添加“+”进行运算。然后执行set(handles.text1,'String',textString)。符号键‘-’、‘*’、‘/’与‘+’的运算函数类似。“平方运算”,主要是由“^2”功能实现。（3）运算符“=”的编程：textString=get(handles.text1,'String');ans=eval(textString);“eval”的作用是将符号表达式转换成数值表达式。再由set(handles.text1,'String',ans)输出。（4）按键“back”编程：即显示一个空字符：set(handles.text1,'String','');按键“back”编程:textString=get(handles.text1,'String');set(handles.text1,'String','');ss=char(textString);n=length(textString);textString=ss(1:w-1);%将w个字符串转成w-1个，即删除了末位字符set(handles.text1,'String',textString)（5）按键“清空”：把静态文本框的字符清空，返回一个空格set(handles.text1,'String','')（6）按键“退出”:关闭计算器close(gcf);二、计算器的使用加法运算（+）：按“=”后显示平方运算：按“=”后显示附各按键的程序源代码：functionpushbutton1_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'0')set(handles.text1,'String',textString)functionpushbutton2_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'1')set(handles.text1,'String',textString)functionpushbutton3_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'2')set(handles.text1,'String',textString)functionpushbutton4_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'3')set(handles.text1,'String',textString)functionpushbutton5_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'4')set(handles.text1,'String',textString)functionpushbutton6_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'5')set(handles.text1,'String',textString)functionpushbutton7_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'6')set(handles.text1,'String',textString)functionpushbutton8_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'7')set(handles.text1,'String',textString)functionpushbutton9_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'8')set(handles.text1,'String',textString)functionpushbutton10_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'9')set(handles.text1,'String',textString)functionpushbutton11_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'+')set(handles.text1,'String',textString)functionpushbutton12_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'-')set(handles.text1,'String',textString)functionpushbutton13_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'*')set(handles.text1,'String',textString)functionpushbutton14_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'/')set(handles.text1,'String',textString)functionpushbutton15_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'.')set(handles.text1,'String',textString)functionpushbutton16_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')s=eval(textString)set(handles.text1,'String',s)functionpushbutton17_Callback(hObject,eventdata,handles)textString=get(handles.text1,'String')textString=strcat(textString,'^2')set(handles.text1,'String',textString)functionpushbutton18_Callback(hObject,eventdata,handles)%hObjecthandletopushbutton18(seeGCBO)%eventdatareserved-tobedefinedinafutureversionofMATLAB%handlesstructurewithhandlesanduserdata(seeGUIDATA)textString=get(handles.text1,'String')w=length(textString)t=char(textString)textString=t(1:w-1)set(handles.text1,'String',textString)functionpushbutton19_Callback(hObject,eventdata,handles)set(handles.text1,'String','')functionpushbutton20_Callback(hObject,eventdata,handles)%hObjecthandletopushbutton20(seeGCBO)%eventdatareserved-tobedefinedinafutureversionofMATLAB%handlesstructurewithhandlesanduserdata(seeGU