not changing the value of the array

[bupeking2000]

I wrote a timesdigit method to multiple a bigint array by a num from 0-9. Now I need to use it to overload operator* to multiply two bigints together. But the problem is when I use the timesdigit it overwrites the array I only want the product of the times without changing the array itself.


ex

bigint a = {1111}

a.timesdigit(2);

a = 2222 I want it to equal 1111 still when the code is done.

//times a bigint by a digit 0-9
bigint bigint::timesdigit(int digit){

  int carry =0;
  int temp=0;

  for(int i= ARRAYSIZE -1; i>0; --i){

    temp=bigintArray[i];
    bigintArray[i]=((bigintArray[i]*digit)+carry)%10;
    carry = ((temp*digit)+carry)/10;

  }

  return *this;
}