Rules for naming variable in QBASIC language

• The rules for naming variables in QBASIC language:
• Variables must start with alphabet and can start be followed by a number.
• Only alphabets, numbers and underscore are allowed while declaring a variable.
• Inbuilt keywords and functions can't be used for variable name.
• Both uppercase and lowercase are accepted.
• The variable name can be maximum of 40 characters. 
• It doesn't take blank space.
  

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