sum() function gives error

Code for simple creation of array and calculating the sum using the sum() function.

I copied the code from the documentation and it just won't work for me.

Can anyone help me out!!

(I only have the trial version and I have tried the code in the online trial version as well as on the trial software)

Answer 1

[madhan ravi]

 clear sum

Answer 2

[Bruno Luong]

You have created a variable named SUM in your workspace that shadows MATLAB stock function SUM.