Write a program to find the area of circle

Answer 1

Okay,
What do you need, to write this program ?
I start, I would like you to finish.
-You need a user input (the diametre)
-PI,
-...

TRY, I will help help you if you don't find.
Then, WE will translate this program to good C++ code.
You can do it man.

Answer 2

What have you tried?

Answer 3

Please help me.... Tell me exact how to write