第一次作业

一.项目功能介绍

　　1.该计算器需要实现加、减、乘、除、开平方功能。

　　2.需要有一个运行的UI界面，可以和电脑自带的计算器相比较。

　　3.该界面要有一个文本输入框，用来显示输入的表达式；

　　4.若干个按钮，用来用来显示数字以及操作符；

　　5.当点击按钮时，按钮上面对应的文本要显示在文本输入框中，并完成计算。

二.使用环境介绍

　　MATLAB是一种用于技术计算的高性能语言。它在一个易于使用的环境中集成了计算，可视化和编程，其中问题和解决方案以熟悉的数学符号表示。可以做小游戏，可以进行精确的数学计算（高数，概率，线代方程，尤其擅长矩阵），三维建模画出立体图形，与C++，Python等混合编程。

三.程序流程图

 

 

 

 

四.详细代码

 

classdef app1 < matlab.apps.AppBase

    % Properties that correspond to app components

    properties (Access = public)

        UIFigure  matlab.ui.Figure

        genhao    matlab.ui.control.Button

        Display   matlab.ui.control.EditField

        Clear     matlab.ui.control.Button

        Delete    matlab.ui.control.Button

        Lift      matlab.ui.control.Button

        Right     matlab.ui.control.Button

        Divide    matlab.ui.control.Button

        Multiply  matlab.ui.control.Button

        Subtract  matlab.ui.control.Button

        Add       matlab.ui.control.Button

        Equal     matlab.ui.control.Button

        Number_3  matlab.ui.control.Button

        Number_6  matlab.ui.control.Button

        Number_9  matlab.ui.control.Button

        Point     matlab.ui.control.Button

        Number_7  matlab.ui.control.Button

        Number_8  matlab.ui.control.Button

        Number_5  matlab.ui.control.Button

        Number_2  matlab.ui.control.Button

        Number_4  matlab.ui.control.Button

        Number_1  matlab.ui.control.Button

        Number_0  matlab.ui.control.Button

    end

    % Callbacks that handle component events

    methods (Access = private)

        % Button pushed function: Number_0

        function Number_0ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"0";

        end

        % Button pushed function: Number_1

        function Number_1ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"1";

        end

        % Button pushed function: Number_4

        function Number_4ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"4";

        end

        % Button pushed function: Number_2

        function Number_2ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"2";

        end

        % Button pushed function: Number_5

        function Number_5ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"5";

        end

        % Button pushed function: Number_8

        function Number_8ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"8";

        end

        % Button pushed function: Number_7

        function Number_7ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"7";

        end

        % Button pushed function: Number_9

        function Number_9ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"9";

        end

        % Button pushed function: Number_6

        function Number_6ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"6";

        end

        % Button pushed function: Number_3

        function Number_3ButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"3";

        end

        % Button pushed function: Add

        function AddButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"+";

        end

        % Button pushed function: Subtract

        function SubtractButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"-";

        end

        % Button pushed function: Multiply

        function MultiplyButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"*";

        end

        % Button pushed function: Divide

        function DivideButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"/";

        end

        % Button pushed function: Point

        function PointButtonPushed(app, event)

            app.Display.Value = app.Display.Value +".";

        end

        % Button pushed function: Lift

        function LiftButtonPushed(app, event)

            app.Display.Value = app.Display.Value +"(";

        end

        % Button pushed function: Right

        function RightButtonPushed(app, event)

            app.Display.Value = app.Display.Value +")";

        end

        % Button pushed function: Equal

        function EqualButtonPushed(app, event)

            app.Display.Value = num2str(eval(char(app.Display.Value)));

        end

        % Button pushed function: Delete

        function DeleteButtonPushed(app, event)

            str = char(app.Display.Value);

            app.Display.Value = str(1:end-1);

        end

        % Button pushed function: Clear

        function ClearButtonPushed(app, event)

            app.Display.Value="";

        end

        % Callback function

        function genhaoButtonPushed(app, event)

            num = char(get(app.Display.Value,'√'));

            app.Display.Value = sqrt((num^2 + 4 * 2) - num^2);

        end

        % Button pushed function: genhao

        function genhaoButtonPushed2(app, event)

           num = num2str(eval(char(app.Display.Value)));

           app.Display.Value = app.Display.Value +sqrt();

        end

    end

    % Component initialization

    methods (Access = private)

        % Create UIFigure and components

        function createComponents(app)

            % Create UIFigure and hide until all components are created

            app.UIFigure = uifigure('Visible', 'off');

            app.UIFigure.Position = [100 100 720 622];

            app.UIFigure.Name = 'MATLAB App';

            % Create Number_0

            app.Number_0 = uibutton(app.UIFigure, 'push');

            app.Number_0.ButtonPushedFcn = createCallbackFcn(app, @Number_0ButtonPushed, true);

            app.Number_0.Position = [74 59 100 54];

            app.Number_0.Text = '0';

            % Create Number_1

            app.Number_1 = uibutton(app.UIFigure, 'push');

            app.Number_1.ButtonPushedFcn = createCallbackFcn(app, @Number_1ButtonPushed, true);

            app.Number_1.Position = [76 132 100 54];

            app.Number_1.Text = '1';

            % Create Number_4

            app.Number_4 = uibutton(app.UIFigure, 'push');

            app.Number_4.ButtonPushedFcn = createCallbackFcn(app, @Number_4ButtonPushed, true);

            app.Number_4.Position = [77 209 100 54];

            app.Number_4.Text = '4';

            % Create Number_2

            app.Number_2 = uibutton(app.UIFigure, 'push');

            app.Number_2.ButtonPushedFcn = createCallbackFcn(app, @Number_2ButtonPushed, true);

            app.Number_2.Position = [203 132 100 54];

            app.Number_2.Text = '2';

            % Create Number_5

            app.Number_5 = uibutton(app.UIFigure, 'push');

            app.Number_5.ButtonPushedFcn = createCallbackFcn(app, @Number_5ButtonPushed, true);

            app.Number_5.Position = [203 209 100 54];

            app.Number_5.Text = '5';

            % Create Number_8

            app.Number_8 = uibutton(app.UIFigure, 'push');

            app.Number_8.ButtonPushedFcn = createCallbackFcn(app, @Number_8ButtonPushed, true);

            app.Number_8.Position = [203 285 100 54];

            app.Number_8.Text = '8';

            % Create Number_7

            app.Number_7 = uibutton(app.UIFigure, 'push');

            app.Number_7.ButtonPushedFcn = createCallbackFcn(app, @Number_7ButtonPushed, true);

            app.Number_7.Position = [75 285 100 54];

            app.Number_7.Text = '7';

            % Create Point

            app.Point = uibutton(app.UIFigure, 'push');

            app.Point.ButtonPushedFcn = createCallbackFcn(app, @PointButtonPushed, true);

            app.Point.Position = [202 59 100 54];

            app.Point.Text = '.';

            % Create Number_9

            app.Number_9 = uibutton(app.UIFigure, 'push');

            app.Number_9.ButtonPushedFcn = createCallbackFcn(app, @Number_9ButtonPushed, true);

            app.Number_9.Position = [329 285 100 54];

            app.Number_9.Text = '9';

            % Create Number_6

            app.Number_6 = uibutton(app.UIFigure, 'push');

            app.Number_6.ButtonPushedFcn = createCallbackFcn(app, @Number_6ButtonPushed, true);

            app.Number_6.Position = [329 209 100 54];

            app.Number_6.Text = '6';

            % Create Number_3

            app.Number_3 = uibutton(app.UIFigure, 'push');

            app.Number_3.ButtonPushedFcn = createCallbackFcn(app, @Number_3ButtonPushed, true);

            app.Number_3.Position = [330 132 100 54];

            app.Number_3.Text = '3';

            % Create Equal

            app.Equal = uibutton(app.UIFigure, 'push');

            app.Equal.ButtonPushedFcn = createCallbackFcn(app, @EqualButtonPushed, true);

            app.Equal.Position = [330 59 100 54];

            app.Equal.Text = '=';

            % Create Add

            app.Add = uibutton(app.UIFigure, 'push');

            app.Add.ButtonPushedFcn = createCallbackFcn(app, @AddButtonPushed, true);

            app.Add.Position = [464 285 100 54];

            app.Add.Text = '+';

            % Create Subtract

            app.Subtract = uibutton(app.UIFigure, 'push');

            app.Subtract.ButtonPushedFcn = createCallbackFcn(app, @SubtractButtonPushed, true);

            app.Subtract.Position = [464 209 100 54];

            app.Subtract.Text = '-';

            % Create Multiply

            app.Multiply = uibutton(app.UIFigure, 'push');

            app.Multiply.ButtonPushedFcn = createCallbackFcn(app, @MultiplyButtonPushed, true);

            app.Multiply.Position = [465 132 100 54];

            app.Multiply.Text = 'x';

            % Create Divide

            app.Divide = uibutton(app.UIFigure, 'push');

            app.Divide.ButtonPushedFcn = createCallbackFcn(app, @DivideButtonPushed, true);

            app.Divide.Position = [465 59 100 54];

            app.Divide.Text = '/';

            % Create Right

            app.Right = uibutton(app.UIFigure, 'push');

            app.Right.ButtonPushedFcn = createCallbackFcn(app, @RightButtonPushed, true);

            app.Right.Position = [464 352 100 54];

            app.Right.Text = '）';

            % Create Lift

            app.Lift = uibutton(app.UIFigure, 'push');

            app.Lift.ButtonPushedFcn = createCallbackFcn(app, @LiftButtonPushed, true);

            app.Lift.Position = [329 352 100 54];

            app.Lift.Text = '（';

            % Create Delete

            app.Delete = uibutton(app.UIFigure, 'push');

            app.Delete.ButtonPushedFcn = createCallbackFcn(app, @DeleteButtonPushed, true);

            app.Delete.Position = [203 352 100 54];

            app.Delete.Text = 'Del';

            % Create Clear

            app.Clear = uibutton(app.UIFigure, 'push');

            app.Clear.ButtonPushedFcn = createCallbackFcn(app, @ClearButtonPushed, true);

            app.Clear.Position = [75 352 100 54];

            app.Clear.Text = 'C';

            % Create Display

            app.Display = uieditfield(app.UIFigure, 'text');

            app.Display.Position = [76 428 488 112];

            % Create genhao

            app.genhao = uibutton(app.UIFigure, 'push');

            app.genhao.ButtonPushedFcn = createCallbackFcn(app, @genhaoButtonPushed2, true);

            app.genhao.Position = [586 285 95 121];

            app.genhao.Text = '√';

            % Show the figure after all components are created

            app.UIFigure.Visible = 'on';

        end

    end

    % App creation and deletion

    methods (Access = public)

        % Construct app

        function app = app1

            % Create UIFigure and components

            createComponents(app)

            % Register the app with App Designer

            registerApp(app, app.UIFigure)

            if nargout == 0

                clear app

            end

        end

        % Code that executes before app deletion

        function delete(app)

            % Delete UIFigure when app is deleted

            delete(app.UIFigure)

        end

    end

end

 

　　五.功能展示

　　5.1加

 

　　5.2减

 

       5.3乘

 

     5.4除

 

     5.5开方