adding numbers in an M file

Here is my code. At the end I want it to add up all of the values.

a = input('Enter number of days you would like to know the total of');
f(1) = .01;
for i = 2:a
    f(i) = (2*f(i-1));
end

can I just add sum(sum(2:a)) before the "end"?

Answer 1

[Andrew Newell]

sum(f)

(after the loop)

Answer 2

[Matt Fig]

A loopless version...

a = input('Enter number of days you would like to know the total of: ');
S = sum(.01.*2.^(0:(a-1)))

If you need f for other calculations:

f = .01.*2.^(0:(a-1));
S = sum(f)

[Andrew Newell]

But loops are all the rage these days!

[Matt Fig]

Haha!