Calling an User-Defined Function from Script:
Now, we will change our script which prompts the user for the radius and computes the area of a circle, to call our function calcarea to compute the area of the circle insead of doing this in the script.
Therefore, the program consists of the script script3 and the function calcarea.Running this will generate the following:
Now enter the radius: 5
For a circle with radius of 5.00, then the area is 78.54