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Ailene Goldhirsh

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Aug 3, 2024, 10:52:02 AM8/3/24

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A list of JavaScript values to output. A representation of each of these values is output to the console in the order given with some type of separation between each of them. There is a special case if obj1 is a string, which is described subsequently.

A JavaScript string containing zero or more substitution strings, which are replaced with subst1 through substN in consecutive order up to the number of substitution strings. See Using string substitutions for a description of how substitutions work.

JavaScript values with which to replace substitution strings within msg. If there are more substitution values than there are substitution strings, the extra values are themselves written to the console after the detailed assertion message in the same manner as when there's no format string.

In this tutorial, you use Visual Studio to create and run a C# console app, and explore some features of the Visual Studio integrated development environment (IDE). This tutorial is part 1 of a two-part tutorial series.

Visual Studio opens your new project, which includes default "Hello World" code. To view it in the editor, select the code file Program.cs in the Solution Explorer window, which is typically on the right-hand side of Visual Studio.

The default "Hello World" code calls the WriteLine method to display the literal string "Hello, World!" in the console window. If you press F5, you can run the default program in Debug mode. After the application runs in the debugger, the console window stays open. Press any key to close the console window.

The single code statement calls the WriteLine method to display the literal string "Hello, World!" in the console window. If you press F5, you can run the default program in Debug mode. After the application runs in the debugger, the console window stays open. Press any key to close the console window.

Optionally, you can change the operator to change the result. For example, you can change the + operator in the int c = a + b; line of code to - for subtraction, * for multiplication, or / for division. When you run the app, the result changes accordingly.

You improved your basic calculator app, but your app doesn't yet handle exceptions, such as user input errors. For example, if users try to divide by zero, or enter an unexpected character, the app might stop working, return an error, or return an unexpected non-numeric result.

Sometimes the app doesn't freeze, and the debugger doesn't show a divide-by-zero error. Instead, the app might return an unexpected nonnumeric result, such as an infinity symbol. The following code fix still applies.

You can now run more calculations until you choose to close the console app. There are also fewer decimal places in the results. And if you enter an incorrect character, you get an appropriate error response.

Git is the most widely used modern version control system. Whether you're a professional developer or you're learning how to code, Git can be very useful. If you're new to Git, the -scm.com/ website is a good place to start. You can find cheat sheets, a popular online book, and Git Basics videos.

Whether your repository is public or private, it's best to have a remote backup of your code stored securely on GitHub. Even if you aren't working with a team, a remote repository makes your code available to you from any computer.

Writes the text representation of the specified objects and variable-length parameter list, followed by the current line terminator, to the standard output stream using the specified format information.

The default line terminator is a string whose value is a carriage return followed by a line feed ("\r\n" in C#, or vbCrLf in Visual Basic). You can change the line terminator by setting the TextWriter.NewLine property of the Out property to another string.

The following example is a tip calculator that calculates an 18% tip and uses the WriteLine method to display the amount of the original charge, the amount of the tip, and the total amount. The example is a console application that requires the user to supply the amount of the original charge as a command-line parameter.

This method uses the composite formatting feature of .NET to convert the value of an object to its text representation and embed that representation in a string. The resulting string is written to the output stream.

The format parameter consists of zero or more runs of text intermixed with zero or more indexed placeholders, called format items, that correspond to an object in the parameter list of this method. The formatting process replaces each format item with the text representation of the value of the corresponding object.

The syntax of a format item is index[,alignment][:formatString], which specifies a mandatory index, the optional length and alignment of the formatted text, and an optional string of format specifier characters that govern how the value of the corresponding object is formatted.

The example changes the line terminator from its default value of "\r\n" or vbCrLf to "\r\n\r\n" or vbCrLf + vbCrLf. It then calls the WriteLine() and WriteLine(String) methods to display output to the console.

This method is not called by C++ code. The C++ compiler resolves calls to System.Console.WriteLine that include a string and a list of four or more object parameters as a call to WriteLine(String, Object, Object, Object, Object). It resolves calls to System.Console.WriteLine that include a string and an object array as a call to WriteLine(String, Object).

The following example calls the WriteLine(String, Object) method to display the current date. Note that the format item in the format argument uses the "D" standard date and time format string to display the date in the long date format of the current culture.