number of arithmetic operations

Hello, I don't know how to calculate the number of arithmetic operations for some case I tried the command flops(0) but i had an error message.

Answer 1

[Walter Roberson]

https://www.mathworks.com/matlabcentral/newsreader/view_thread/289675

http://www.mathworks.com/matlabcentral/fileexchange/50608-counting-the-floating-point-operations--flops-