MATLAB: User defined function error

Question

This is my user defined fumction

function color_val= color(y,x)
  for j=1:3
    red(j)=RGB(y,x,j);
  end
  color_val=red;

But i get this error:-

Error: File: connect.m Line: 153 Column: 1
Function definitions are not permitted in this context.

Answer 1

program and function definition must be in separate files and function file must have same name as function

% main file
y = 1;
z = 2;
b = myfunc(y ,z)
disp(b)
% separate file with same fun name
function a = myfunc(y ,z)
a=x+z;
or
function main
 y = 1;
z = 2;
b = myfunc(y ,z)
disp(b)
function a = myfunc(y ,z)
a=x+z;