MATLAB: Global variables in matlab

Question

I have a file_1.m file which has the following code;

global a;
a=1;
b=2;
file_2();

And my file_2.m has the following

function file_2
c=a+3;
d=2;
end

I had thought that since I have declared "a" as global in file_1.m, file_2 should have access to its value without passing a as an argument.

But it does not. How is it possible for file_2 to have access to the value of 'a' without passing it as an argument?

Answer 1

You need to specifically say that the variable is in the global namespace in the second file.

global a