MATLAB: Won’t this display

why wont this display?

I am trying to display a random number x. I have tried the following for making the code display x but without success:
a = 16807;
b = 2147483647;
function [x] = lrng(m,a)
x(1)= (m-1)*rand(1)+1
for k=2:10
    x(k)=mod(a*x(k-1),m);
end
fprintf('%.2f', x)
end
and
a = 16807;
b = 2147483647;
function [x] = lrng(m,a)
x(1)= (m-1)*rand(1)+1
for k=2:10
    x(k)=mod(a*x(k-1),m);
end
disp(x)
end
Every time I try, I get the confirmation that the code has been run, but then it wont show me the output. What do I do? Have I made some mistakes regarding the code or is it something else?
Kind regards Jens

Best Answer

Well, you're creating a variable a, a variable b, and a function lrgn but never do anything with them such as calling the function with your a and b variable.
So possibly, you meant to do:
a = ...
b = ...
lrng(b, a)   %actually call the function!
function [x] = ...
Note that it's only in recent versions of matlab that you can define a function in a script. In earlier versions, your function would have had to be in a separate file, making more obvious that you never do anything with it.
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