Function with variable number of input arguments

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Hey everyone,
I created a function called matrixmultiply, and I'm trying to define it for 2, 3, and 4 input arguments. How do I do this in one single script? I've heard "varargin" and "nargin" variables could work, but I don't know how to use those.
(I've defined it separately for 4 arguments already.)
Thanks!

Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 24 Jul 2014
In your case you can just use nargin to know the number of inputs. Look at this example
function y=fcn10(a,b,c,d)
if nargin==2
y=a+b
elseif nargin==3
y=a*b*c
elseif nargin==4
y=(a+b)*(c+d)
end
  1 Comment
Sid jayadev
Sid jayadev on 24 Jul 2014
ah ok great! thanks! I have a complete if..elseif..elseif...end loop for 4 arguments, so do i need to create separate if statements for 3 and 2 arguments, or can i simply continue nargin = 3 and margin in the original if statement for 4 variables?

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