Thread: A lil confused

  1. #1
    Registered User
    Join Date
    Dec 2006

    A lil confused

    Need to know how the following code would function...

    int main()
    int i=7;
    for the above mentioned the output is 56
    if i were to change it to
    still the same output
    outputs it as 64

    Cant figure out how its going about executing the statement, would appreciate help on this.

  2. #2
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    It's undefined.

    In short, if you modify the same variable twice, or modify and read the variable, then all bets are OFF as to what actually happens.

    Follow that link to further read up on something called "Sequence Points".
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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