I'm receiving this error code Line: 112 Column: 5 Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To co

6 次查看（过去 30 天）
Neal
Neal 2023-4-29
回答： Walter Roberson 2023-4-29
classdef NShirley_004_BlackJackApp < matlab.apps.AppBase
% Properties that correspond to app components
properties (Access = public)
UIFigure matlab.ui.Figure
StandButton matlab.ui.control.Button
HitButton matlab.ui.control.Button
StartButton matlab.ui.control.Button
PlayerScoreLabel matlab.ui.control.Label
DealerScoreLabel matlab.ui.control.Label
PlayerPanel matlab.ui.container.Panel
PlayerCardsLabel matlab.ui.control.Label
DealerPanel matlab.ui.container.Panel
DealerCardsLabel matlab.ui.control.Label
end
properties (Access = private)
Property % Variables used for game logic
deck % a deck of cards
dealer % dealer's hand
player % player's hand
playerScore = 0;
dealerScore = 0;
gameOver = false;
end
% App initialization and setup
methods (Access = private)
% Create the deck of cards
function createDeck(app)
% A deck is created as an array of card structures
suits = {'H', 'D', 'C', 'S'};
values = {'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'};
cardIdx = 1;
for s = 1:length(suits)
for v = 1:length(values)
app.deck(cardIdx).suit = suits{s};
app.deck(cardIdx).value = values{v};
cardIdx = cardIdx + 1;
end
end
app.deck = app.deck(randperm(length(app.deck))); % shuffle the deck
end
% Start a new game
function start(app)
app.deck = [];
app.dealer = [];
app.player = [];
app.playerScore = 0;
app.dealerScore = 0;
app.gameOver = false;
app.createDeck();
% Dealer draws two cards, one face up and one face down
app.dealer(1) = app.drawCard();
app.dealer(2) = app.drawCard();
app.dealerScore = app.getHandValue(app.dealer);
app.DealerCards.Text = [app.dealer(1).suit app.dealer(1).value ' ??'];
app.DealerScore.Text = ['Dealer score: ' num2str(app.getHandValue(app.dealer))];
% Player draws two cards
app.player(1) = app.drawCard();
app.player(2) = app.drawCard();
app.playerScore = app.getHandValue(app.player);
app.PlayerCards.Text = [app.player(1).suit app.player(1).value ' ' app.player(2).suit app.player(2).value];
app.PlayerScore.Text = ['Player score: ' num2str(app.playerScore)];
end
% Draw a card from the deck
function card = drawCard(app)
if ~isempty(app.deck)
card = app.deck(1);
app.deck = app.deck(2:end);
else
card = [];
end
end
% Get the value of a hand (accounting for aces)
function value = getHandValue(~, hand)
value = 0;
numAces = 0;
for i = 1:length(hand)
if ismember(hand(i).value, {'J', 'Q', 'K'})
value = value + 10;
elseif strcmp(hand(i).value, 'A')
value = value + 1;
numAces = numAces + 1;
else
value = value + str2double(hand(i).value);
end
end
% If there are aces in the hand, and the hand value is less than or
% equal to 11, treat one ace as a value of 11 instead of 1
while numAces > 0 && value <= 11
value = value + 10;
numAces = numAces - 1;
end
end
end
end % end of classdef block
% Callbacks that handle component events
methods (Access = private)
% Button pushed function: StartButton
function StartButtonPushed(app, event)
app.start();
app.DealerCards.Text = [app.dealer(1).suit app.dealer(1).value ' ??'];
app.DealerScore.Text = ['Dealer score: ' num2str(app.getHandValue(app.dealer))];
app.PlayerCards.Text = [app.player(1).suit app.player(1).value ' ' app.player(2).suit app.player(2).value];
app.PlayerScore.Text = ['Player score: ' num2str(app.playerScore)];
end
% Button pushed function: HitButton
function HitButtonPushed(app, event)
if ~app.gameOver
app.player(end+1) = app.drawCard();
app.playerScore = app.getHandValue(app.player);
app.PlayerCards.Text = [app.PlayerCards.Text ' ' app.player(end).suit app.player(end).value];
app.PlayerScore.Text = ['Player score: ' num2str(app.playerScore)];
if app.playerScore > 21
app.dealerScore = app.getHandValue(app.dealer);
app.DealerCards.Text = [app.DealerCards.Text ' ' app.dealer(end).suit app.dealer(end).value];
app.DealerScore.Text = ['Dealer score: ' num2str(app.dealerScore)];
app.gameOver = true;
app.result('You busted!');
end
end
end
% Button pushed function: StandButton
function StandButtonPushed(app, event)
if ~app.gameOver
app.dealerScore = app.getHandValue(app.dealer);
while app.dealerScore < 17
app.dealer(end+1) = app.drawCard();
app.dealerScore = app.getHandValue(app.dealer);
app.DealerCards.Text = [app.DealerCards.Text ' ' app.dealer(end).suit app.dealer(end).value];
app.DealerScore.Text = ['Dealer score: ' num2str(app.dealerScore)];
end
end
if app.dealerScore > 21 || app.dealerScore < app.playerScore
app.result('You win!');
elseif app.dealerScore == app.playerScore
app.result('Push!');
else
app.result('You lose!');
end
app.gameOver = true;
end
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 = [100 100 640 480];
app.UIFigure.Name = 'MATLAB App';
% Create DealerPanel
app.DealerPanel = uipanel(app.UIFigure);
app.DealerPanel.Title = 'Dealer';
app.DealerPanel.Position = [1 87 260 221];
% Create DealerCardsLabel
app.DealerCardsLabel = uilabel(app.DealerPanel);
app.DealerCardsLabel.HorizontalAlignment = 'center';
app.DealerCardsLabel.FontSize = 25;
app.DealerCardsLabel.Position = [47 75 153 68];
app.DealerCardsLabel.Text = 'Dealer Cards';
% Create PlayerPanel
app.PlayerPanel = uipanel(app.UIFigure);
app.PlayerPanel.Title = 'Player';
app.PlayerPanel.Position = [381 87 260 221];
% Create PlayerCardsLabel
app.PlayerCardsLabel = uilabel(app.PlayerPanel);
app.PlayerCardsLabel.HorizontalAlignment = 'center';
app.PlayerCardsLabel.FontSize = 25;
app.PlayerCardsLabel.Position = [53 75 153 68];
app.PlayerCardsLabel.Text = 'Player Cards';
% Create DealerScoreLabel
app.DealerScoreLabel = uilabel(app.UIFigure);
app.DealerScoreLabel.HorizontalAlignment = 'center';
app.DealerScoreLabel.FontSize = 25;
app.DealerScoreLabel.Position = [23 331 171 74];
app.DealerScoreLabel.Text = 'Dealer Score';
% Create PlayerScoreLabel
app.PlayerScoreLabel = uilabel(app.UIFigure);
app.PlayerScoreLabel.HorizontalAlignment = 'center';
app.PlayerScoreLabel.FontSize = 25;
app.PlayerScoreLabel.Position = [425 344 171 48];
app.PlayerScoreLabel.Text = 'Player Score';
% Create StartButton
app.StartButton = uibutton(app.UIFigure, 'push');
app.StartButton.ButtonPushedFcn = createCallbackFcn(app, @StartButtonPushed, true);
app.StartButton.Position = [271 256 100 23];
app.StartButton.Text = 'Start';
% Create HitButton
app.HitButton = uibutton(app.UIFigure, 'push');
app.HitButton.ButtonPushedFcn = createCallbackFcn(app, @HitButtonPushed, true);
app.HitButton.Position = [271 185 100 23];
app.HitButton.Text = 'Hit';
% Create StandButton
app.StandButton = uibutton(app.UIFigure, 'push');
app.StandButton.ButtonPushedFcn = createCallbackFcn(app, @StandButtonPushed, true);
app.StandButton.Position = [271 102 100 23];
app.StandButton.Text = 'Stand';
% 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 = NShirley_004_BlackJackAp1
% 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

请先登录，再回答此问题。

回答（1 个）

Walter Roberson
Walter Roberson 2023-4-29
end % end of classdef block
Methods must be defined inside the classdef block.
You have several similar issues, of method blocks not being properly scoped. I suggest you take advantage of "Smart Indent" to see how MATLAB is interpreting the nesting.

类别

在 Help Center 和 File Exchange 中查找有关 Work with Components 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by