Should the cash flow be presented to the client or internally implied or is it important to do both?

The Cash flow contains the profit of the contractor, So I think that that the client doesn't have to see it.
He could see the values of the required Payments only.

Nice question Mr.Raafat, cash flow is used to analyse the project financial status.
This will shows us what we are incurring cost as well as what we are getting from client as invoice against the incurred cost.
This will show the clear picture of of cash gap.
Normally all the contracts having definitely some profit margin in that case it is not necessary to disclose with the client which may impact the future business.
But in some cases, due to poor consideration while contracting project may not get profit as well as need to spend our own money to finish the project/ lose.
In that case, we can arrange the meeting with client commercial department to consider our lose wITh the help of cash flow.
Regards, Asarudeen S.

absolutely true, but u can also present the projects' cash flow in regards to the budget and invoices