Can someone explain to me why in Section 4: Functions they compute Twice by multiplying the number by three then subtracting the number once? Is it just to showcase more math, or is there a detail I'm missing?
> /*
Computes double of a number.
Works by tripling the number, and then subtracting to get back to double.
/
static int Twice(int num) {
int result = num * 3;
result = result - num;
return(result);**
> /* Computes double of a number. Works by tripling the number, and then subtracting to get back to double. /