objective c - What's the correct way to accumulate NSDecimalNumber values? -

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i trying accumulate nsdecimalnumber values obtained array (apptdataarray, obtained coredata store; acurrentcharges defined nsdecimalnumber). code:

        nsdecimalnumber *accumulatedfees = 0;         for(int = 0; < apptdataarray.count; i++)  {             appointmentinfo *currentappointment = [apptdataarray objectatindex: i];             accumulatedfees = [accumulatedfees decimalnumberbyadding: currentappointment.acurrentcharges];  //  <----  not accumulating         }         oaccumulatedcharges.text = [nsstring stringwithformat:@"%@",accumulatedfees];

my problem line marked not accumulating doing -- not accumulating. doing wrong?

the variable accumulatedfees not being initialized correctly. try setting way:

nsdecimalnumber *accumulatedfees = [nsdecimalnumber zero];

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