What are the naming rules for c# variables?

C# The variable naming rules are: start with a letter or underscore, and may subsequently contain letters, underscores or numbers. case sensitive. Maximum 64 characters. C# keywords cannot be used. The @ symbol cannot be used. Variable names should clearly describe their purpose. Avoid using abbreviations. Be consistent.

C# Variable naming rules

In C#, variable naming follows the following rules:

1. Naming convention

• Start with a letter or underscore.
• Following characters can be letters, underscores or numbers.
• Case-sensitive, for example, "name" and "Name" are different variables.
• CamelCase: For multi-word variables, use uppercase letters to separate words, such as "firstName".
• Pascal nomenclature: For class and method names, capitalize the first letter of all words, such as "FirstName".

2. Length limit

• The variable name can be up to 64 characters.

3. Reserved keywords

• You cannot use C# keywords as variable names, such as "var", "for", "while" .

4. Special characters

• @ symbols cannot be used in variable names.

5. Clear meaning

• Variable names should clearly describe their purpose. For example, for a variable that stores a username, it would be more appropriate to name it "username" rather than "name".

6. Avoid using abbreviations

• Avoid using abbreviations in variable names unless the abbreviation is well known.

7. Consistency

• Keep your variable naming style consistent throughout your code base.

Example:

• Valid variable names: firstName, productCount
• Invalid variable names: 1name,@username, #number

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