* Name: Ahmed Moussa
* SSN: 999-99-9999
* Assignment number: 9
* Instructor: Ahmed Moussa

* This program takes a radius value from and computes the 
* corresponding circle area. The program first tells the user 
* what it is for. It then prompts the user to input the desired
* radius. Next, it uses the radius in the formula for computing 
* the area and stores the result in a variable with indicative 
* name. Finally the program posts the result on the screen.


* program code
* Program title
	program circle

* Specification section including 3 real numbers for the radius, 
* pi, and the area of the circle
	real radius, pi, area
* pi is made constant
	parameter (pi = 3.14)

* prompt the user to input the radius
	print*, 'Welcom to Circle'
	print*, 'This program computes the area of a circle'
	print*, 'Please enter the radius for which you want to 
     ccompute the circle area'

* read the input from the user
	read*, radius

* computing the circle area
	area = pi * radius**2

* posting the result
	print*, 'The area of the circle with radius ', radius, 
     c' is:', area

* program ending
	end