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  1. #1
    appoint_raj is offline Member
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    Question Variable Nomenclature

    why in programing language variable names whould start from underscore or alphabetes only and not from a number?

  2. #2
    agent_kiran is offline Member
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    Default Agent

    It's a naming convention defined by all the other language developers.

  3. #3
    Singing Boyo is offline Senior Member
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    Default

    It's an extremely rigid convention, and they cannot start with numbers for another reason... It's extremely difficult for a compiler to tell the difference if there is a number at the beginning of your variable name. Not so hard after that, but before the compiler knows that is is reading a variable, if you give it what looks like a numerical constant, it will be confused...
    If the above doesn't make sense to you, ignore it, but remember it - might be useful!
    And if you just randomly taught yourself to program, well... you're just like me!

  4. #4
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    angryboy is offline Senior Member
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    To add to what SB said, imagine you are expected to write a parser and is expected to categorize this into digits or variables:
    Java Code:
    int 123;
    // whatever code here
    123 = 999;
    That's a headache to work with isn't it.
    USE CODE TAGS--> [CODE]...[/CODE]
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