get the time needed to process one function.

[Nomen Nescio]

Barry Schwarz said:

By the way, to get the precision you asked for, CLOCKS_PER_SEC on your
system must be at least 10,000.

Wrong.

To the OP, once again:

"The C standard doesn't specify a particular resolution, and you
can't even examine the value of CLOCKS_PER_SEC to determine the
particular resolution used."

To the OP, please don't listen to Mr. Schwarz. As he said about
me, "... you really don't need to raise your confusion level any
higher."

Yours,
Han from China