Identifier is user defined name given to function, variable, structure, union, array etc. followings are rules to name an identifier.
- Name must be start with alphabet or underscores
- An identifier may have numbers but not used as first character
- Special symbol is not allowed .
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Valid Variable Name
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Invalid Variable Name
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A2
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2A
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_a
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-a
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A_B
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A
B
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*a
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A& (any special symbol)
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