Chapter 6.2, Problem 6E

(a)

Program Plan Intro

To definethe function surfarea(double r, double l) that returns the side surface area of cylinder by using the below formula: -

  $\begin{array}{l}S=2\Pi rl\\ \forall r\text{is}\text{the}\text{radius}\text{and}l\text{is}\text{the}\text{length}\text{of}\text{cylinder}\end{array}$

(b)

Program Plan Intro

Program plan:

• Import the header file and use the namespacestd.
• Declare the function surfarea(double r, double l).
• Define the main function.
• Declare the variables to store the radius and length.
• Prompt the user to enter the radius and length of the cylinder.
• Call the function surfarea() and displaying the value returned by it.
• Define the function surfarea() that takes radius and length of the cylinder as the function arguments and returns the side surface area of the cylinder.
• Declare the variable to store the side surface area of cylinder.
• Calculate the side surface area.
• Return the side surface area.

Program description:

The main purpose of the program is to implement the function written in Exercise 6a into the main function and test the function to get the appropriate output.