What are the two methods which can be employed to calculate net cash flow from operating activities?

1 Direct method 2 indrict method 

The two methodes use for calculating net cash flow from operating activities are as follows a, Direct Method b, Indirect Method

1) Direct Method 2) Indirect Method

Direct and Indirect method

Two Methods

1.
Direct Method

2.
Indirect Method

1) Scientific Method (SM) 2) Default method (DM).