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Abra o Visual Studio Open Visual Studio NET Core. In the left pane of the New Project dialog box, expand C , and then choose. No painel central, escolha Aplicativo de Console.

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Abra o Visual Studio Open Visual Studio NET Core. In the left pane of the New Project dialog box, expand C , and then choose. No painel central, escolha Aplicativo de Console. In the middle pane, choose Console App. Em seguida, nomeie o arquivo como Calculator. Then name the file Calculator. Adicionar uma carga de trabalho opcional Add a workload optional Se o modelo de projeto Aplicativo do Console. NET Core de multiplataforma. NET Core project template, you can get it by adding the.

NET Core cross-platform development workload. Veja como. The Visual Studio Installer launches. Escolha a carga de trabalho Desenvolvimento multiplaforma do. NET Core e, em seguida, selecione Modificar. Choose the. NET Core cross-platform development workload, and then choose Modify. Na janela inicial, escolha Criar um novo projeto.

On the start window, choose Create a new project. Na janela Criar um novo projeto, insira ou digite console na caixa de pesquisa. On the Create a new project window, enter or type console in the search box. Next, choose C from the Language list, and then choose Windows from the Platform list. After you apply the language and platform filters, choose the Console App. NET Core template, and then choose Next.

If you do not see the Console App. NET Core template, you can install it from the Create a new project window. Em seguida, no Instalador do Visual Studio, escolha a carga de trabalho de desenvolvimento multiplataforma do. Then, in the Visual Studio Installer, choose the.

After that, choose the Modify button in the Visual Studio Installer. You might be prompted to save your work; if so, do so. Em seguida, escolha Continuar para instalar a carga de trabalho. Next, choose Continue to install the workload.

Em seguida, retorne para a etapa 2 deste procedimento para " Criar um projeto ". Then, return to step 2 in this " Create a project " procedure. Na janela Configurar seu novo projeto, digite ou insira Calculadora na caixa Nome do projeto.

In the Configure your new project window, type or enter Calculator in the Project name box. Em seguida, escolha Criar. Then, choose Create. Visual Studio opens your new project, which includes default "Hello World" code. Depois disso, depuraremos o aplicativo para encontrar e corrigir erros. In the code editor, delete the default "Hello World" code. Especificamente, exclua a linha com o texto: Console.

WriteLine "Hello World! Specifically, delete the line that says, Console. WriteLine c ; Console. Notice that when you do so, the IntelliSense feature in Visual Studio offers you the option to autocomplete the entry.

Destina-se apenas a mostrar como o recurso de autocompletar funciona. Choose the green Start button next to Calculator to build and run your program, or press F5. Optional You can change the operator to change the result. Then, when you run the program, the result changes, too. Feche a janela do console. Close the console window. Delete all the code you see in the code editor. ToInt32 Console. WriteLine "Choose an option from the following list:" ; Console.

Write "Your option? Write "Press any key to close the Calculator console app Choose Calculator to run your program, or press F5. A console window opens. View your app in the console window, and then follow the prompts to add the numbers 42 and The calculator app currently accepts and returns whole numbers. But, it will be more precise if we add code that allows for decimals. Change each instance of the int variable to float.

Run your calculator app again and divide the number 42 by the number Observe que o aplicativo agora retorna um numeral decimal em vez de zero. Notice that the app now returns a decimal numeral instead of zero.

No entanto, o aplicativo produz apenas um resultado decimal. However, the app produces only a decimal result. ToInt32 para Convert. ToInt32 method to Convert. Run your calculator app and divide the number Observe que o aplicativo agora aceita valores decimais e retorna um numeral decimal mais longo como resultado.

Notice that the app now accepts decimal values and returns a longer decimal numeral as its result. For example, if you try to divide a number by zero, or enter an alpha character when the app expects a numeric character or vice versa , the app might stop working, return an error, or return an unexpected nonnumeric result. For more information about the debugger and how it works, see the First look at the Visual Studio debugger page.

Instead, the app might return an unexpected nonnumeric result, such as an infinity symbol. The following code fix still applies. Now, when you divide any number by zero, the app will ask for another number. If you enter an alpha character when the app expects a numeric character or vice versa , the console app freezes.

The Calculator class will handle the bulk of the calculation work, and the Program class will handle the user interface and error-capturing work. Write "This is not valid input.

WriteLine "Choose an operator from the following list:" ; Console. DoOperation cleanNum1, cleanNum2, op ; if double. WriteLine "This operation will result in a mathematical error. WriteLine "Oh no! An exception occurred trying to do the math. Follow the prompts and divide the number 42 by the number Notice that you have the option to enter more equations until you choose to close the console app.

Close the Output pane in Visual Studio. Feche o Visual Studio. Close Visual Studio. The app now handles computing resources more efficiently, and it handles most user input errors. Congratulations on completing this tutorial! Para saber ainda mais, acompanhe os tutoriais a seguir. To learn even more, continue with the following tutorials.

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