MATLAB: Not enough input arguments

Question

I am trying to solve a simple optimization problem using GA.

Main file –

nvars  = 3;
lb = [0; 0; 0];
ub = [1; 1; 1];
intcon = [1 2 3];
sol = ga(fun, nvars, [], [], [], [], lb, ub, [], intcon);

Function –

function val = fun(x)
%if (x(1)==1 || x(2)==1 || x(3)==1)
  %val = 10000;
%else
a = x(1);
b = x(2);
c = x(3);
val = 10*a + 20*b - 30*c; 
end

But it throws this error –

Error using fun (line 5)
Not enough input arguments.
Error in test_ga (line 7)
sol = ga(fun, nvars, [], [], [], [], lb, ub, [], intcon);

Need urgent help!!

Thank you.

Answer 1

sol = ga(@fun, nvars, [], [], [], [], lb, ub, [], intcon);