Question

Sorry, I am not good at math
But is there a mathematical formula that could replace the below code, i.e. to calculate the points given qid,points, and factor without a loop?

    for (int i = 1; i < qid; i++) 
    {
       points = points * factor;
    }

How can I convert the above code into a mathematical formula than can be calculated in a single line without a loop
thanks.

Answer 1

assuming points is initialized to 1, it is equvalent to points = factor^(qid-1), or for general case: points_after = points_before * factor^(qid-1)

The loop repeats qid - 1 times [i get the values: 1,2,...,qid-1, for value i==qid you do not multiple], and in each iteration you multiple points by factor each time, so you multiple it by total of factor^(qid-1)