# Sum of integers up to n using a while loop

516 views (last 30 days)
Will Murphy on 15 Feb 2020
Commented: Will Murphy on 15 Feb 2020
Hi, I've recently started coding as part of my uni maths course, however I am struggling very much with the learning curve.
I want to know how to sum all the positive numbers up to and including n by using a while loop.
From what I have gathered already I would use in the case of n = 10
s = 0
n = 10
while s < ((n + 1) * n / 2)
N = N + 1
s = s + N
end
disp(s)
What could I do to make this work? Any help would be greatly appreciated,
Matt J on 15 Feb 2020
Are we supposed to see why it doesn't work now?

JESUS DAVID ARIZA ROYETH on 15 Feb 2020
try it yourself with a for (see documentation)
You can be guided by this example:
s = 0;
k=1;
n = 10 ;
while k <= n
s=s+k;
k=k+1;
end
disp(s)
In the end, the idea is that with practice you can do all this code in a line like this:
n=10
s=sum(1:n)
Will Murphy on 15 Feb 2020
Ah okay, I had misinterpreted the symbols. All cleared up now, thanks for the help.