"Fixing" a value in a recursive function

Hi,

I'm trying to use a recursive function to create a specific shape as an output. My function must have only one input. The objective is that my output shows a by x triangle of a specific symbol, such as:

*

**

***

Here is my actual code:

function triangle(x)

if x==1

xc=repmat('*',1,x);

fprintf('%+*s\n',20,xc);

else

triangle(x-1);

xc=repmat('*',1,x);

fprintf('%+*s\n',20,xc);

end

end

I would want the "20" (shown in bold) to be fixed as the initial "x". And not to increment with the recursion occuring.

Thanks