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C Language > Learn C Language > How do you declare a variable in C?
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How do you declare a variable in C?

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Maths tutor with 7 years experience

Variables can be combination of alphabets and digits. Underscore (_) is the only special character allowed. Variables can be written in both Uppercase and Lowercase or combination of both. Variables are Case Sensitive. No Spaces allowed between Characters. Variable name should not make use to...
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  • Variables can be combination of alphabets and digits.
  • Underscore (_) is the only special character allowed.
  • Variables can be written in both Uppercase and Lowercase or combination of both.
  • Variables are Case Sensitive.
  • No Spaces allowed between Characters.
  • Variable name should not make use to the C Reserved Keywords.
  • Variable name should not start with a number. Ex: S_no, name, toTal1 etc
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IT Professional Trainer with 12 years of experience in IT Industry

To declare a variable in C, you need to specify its type and name. The type of the variable tells the compiler what kind of data it can store, and the name of the variable allows you to refer to the data in your code.The syntax for declaring a variable in C is:type variable_name;
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