CS 115 Summer 2017,

Lab 2 :

Due in Tuesday 6/20/17 in Lab

Educational goals of this lab - verify that every student can do the following:

• Get inputs from user
• Arithmetic operators
• Output operators
• typecasts for input of numbers
• Using Built-in Packages

INSTRUCTIONS:

• Problem: Calculating the volume of a cylinder.
  A cylinder is the surface formed by the points at a fixed distance from a given straight line called the axis of the cylinder. It is one of the most basic geometric shapes.
  In this lab, write a python program to calculate the volume of a cylinder with the radius and height entered by the user; note the volume of a acylinder is calculated using the formula shown in the figure.
  
  
  
  
  
• Here is the specification for the program:

  Purpose:Calculate the volume of a cylinder

  Preconditions:Input radius and height of a cylinder

  Postconditions: Output the volume of the cylinder

• Design:
  The following steps show the design (Pseudocode) of your program:

  1. Get the length of the radius in inches from the user; make sure to use a descriptive prompt so the user knows what to enter.

  2. Get the height in inches; again, make sure to use a descriptive prompt so the user knows what to enter.

  3. Calculate the volume of a cylinder with the radius and height entered by the user; note the volume of a sphere is calculated using the formula.

• Run Examples
  When you have the program running correctly, Verify that your program produces the same output as in the following test cases.

  --- Test case 1 ---
  Welcome to Program 1
  Enter the length of the radius for the cylinder:10.5
  Enter the height in inches for the cylinder: 5
  
  Volume of the cylinder is 1731.803
  
  --- Test case 2 ---
  Welcome to Program 1
  Enter the length of the radius for the cylinder: 18
  Enter the height in inches for the cylinder: 15
  
  Volume of the cylinder is 15268.140
  
  --- Test Case 3 ---
  Welcome to Program 1
  Enter the length of the radius for the cylinder:2
  Enter the height in inches for the cylinder: 4
  
  Volume of the cylinder is 50.265
  
  

• Requirments:
  1- Use the built-in value for pi using math.pi
  
  2- Your output should match the run examples above.
  
  3- Make sure you document your program. Use good, multi-character, meaningful identifiers (variables).
  
  3- Show the result value of volume using three decimal values only as shown in the run examples.
  
  4- At the top of your program, you should have a prolog (name, date, etc.) and comments explaining different operations in your code.
  
  5- Save the program file as volume.py.
  
  
• When you are done, show your program to the Instructor and then submit your file (volume.py) as a submission for Lab 2 on CANVAS.