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  • Hi dears, please look this...

    if ( false==false==false )
    qDebug()<<"Ding Ding !"; //UNREACHABLE CODE

    i think that it should be ok and print my message because of
    FALSE is FALSE and FALSE will be FALSE!!!
    compiler work with it's result which it returned. but why?
    i know we need the result for if but... let's speak about it...

  • Hi,
    Off course this compiles (will give Wparentheses warning). The result will be not printing the output! Very simpel, the == operator does a compare of the first two elements (false==false) this will return true. Then do the compare of true==false -> result false, so your code does:
    if (false)
    So this does not work and will not print the output

  • That's great! So if FFF is false, test FTF, you'll be surprised!
    How does a brain works to find such things!
    Very amusing.

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