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["(sywr./CE+ST~~}T~~YFF7777777*XCS}T~~}T~~","Token."," What exactly is a token in the C# programming language? The specification defines a token using the C# grammar. Tokens are generally any unit that is not whitespace or a comment. They are part of the text of a program. ","Info: ","This article covers the concept of tokens at the level of the C# language. It helps us understand how the language is compiled.","Comment ","comment","Example."," Let's explore the concept of tokens by looking at this C# program. We see the program and then break it up into individual tokens. These include keywords (class), identifiers (Program), literals (2) and operators (=). ","ins","class","adsbygoogle","data-ad-client","ca-pub-4712093147740724","data-ad-slot","6227126509","data-ad-format","auto","ins","class","adsbygoogle","data-ad-client","ca-pub-4712093147740724","data-ad-slot","6227126509","data-ad-format","auto","Program: C#","\n\nclass Program\n{\n static void Main()\n {\n int test = 2;\n float item = 5.5f;\n char unit = 'e';\n string basic = \"c#\";\n }\n}\n\n","Tokens","\n\nclass\nProgram\n{\nstatic\nvoid\nMain\n(\n)\n{\nint\ntest\n=\n2\n;\nfloat\nitem\n=\n5.5f\n;\nchar\nunit\n=\n'e'\n;\nstring\nbasic\n=\n\"c#\"\n;\n}\n}\n\n","Token types","\n\n","identifier:","\n\nIdentifiers are arbitrary names in your C# program.\nThis includes Program, Main, test, item, unit and basic.\n\n","keyword:","\n\nMany keywords are reserved by the C# language.\nThese include class, static, void, int, float, char and string.\n\n","integer-literal:","\n","real-literal:","\n","character-literal:","\n","string-literal:","\n\nLiterals are constant values you can use in your program.\nThese include 2, 5.5f, 'e' and \"c#\".\nLiterals include the enclosing quotation marks.\nFor the literal 5.5f, the numeric suffix is included in the literal.\nThis is a real-literal.\n\n","operator-or-punctuator:","\n\nThese are characters in your program that are part of the scope\nstructure, or assignment and arithmetic statements.\nSome operators, such as && are considered a single token.\nThe characters () are separate tokens.","Specification."," For more material like this on the C# language, the specification is available. It goes into painful detail on almost every issue relating to this language. This material was adapted from page 61 of the C# annotated specification.","Summary."," We now know what a token is in the C# language. This can be helpful in understanding how the language is parsed. Any time you see more closely how the compiler approaches a language, you gain insight into how it should be used. ","Review: ","This description provides insight into how the C# compiler views programs.","ins","class","adsbygoogle","data-ad-client","ca-pub-4712093147740724","data-ad-slot","3679700504","data-ad-format","link","ins","class","adsbygoogle","data-ad-client","ca-pub-4712093147740724","data-ad-slot","6227126509","data-ad-format","auto","url(data:image/png;base64,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)","url(data:image/png;base64,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)","url(data:image/png;base64,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)"]

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