HW 1

Assignment #1

Due: Friday, Sept 22

Objectives

To practice with writing a small C++ main() program, along with compiling and running it
To practice with basic C++ input/output features, along with some simple decimal formatting
To practice with basic arithmetic operators in C++

Task

Create a program (Filename: paint.cpp) that will calculate the amount of paint needed to cover one side of a house with a sloped roof.

Assume that this side wall of the house is generally shaped as in the diagram below (with rectangular lower section, and triangular section where the roof slopes to a point) and that it contains one rectangular window, which does not get painted (obviously).
As you can see in the sample execution, you should ask the user for the dimensions of the wall (width, height to the bottom of the slanted roof, height up to the tip of the slanted roof) and the dimensions of the window (width and height) -- in this order. All of these dimensions should be of type double
Assume that a can of paint will cover 400 square feet of wall (make this a constant integer variable, so that it's simple to change this value in the program -- for example, to represent larger cans of paint in future versions).
After collecting all of the dimensions, your program should produce the output demonstrated in the sample execution. Also note that:
- The user-entered dimensions should be displayed in default format (only using a decimal point and digits to the right when needed)
- The paintable area should be displayed to 1 decimal place
- The required number of cans should be displayed to 2 decimal places
Write your program so that the output looks EXACTLY like the sample execution shown below (this means same wording, spacing, and formatting of numbers)
- Note: The underlining in the sample execution below is used to illustrate the input that the user is typing in -- obviously the underlining will not appear on the console.
You may assume that user input will be correct (i.e. numeric entries and valid dimensions)

General Requirements

No global variables
All input and output must be done with streams, using the library iostream
You may only use the iostream library (you do not need any others for these tasks)
When you write source code, it should be readable and well-documented.
Style Guidelines for Programs

A sample run: (user input underlined)

Welcome to Paint Calculator 2023!!

How wide is the wall (in feet)? 40
and how high is the wall to the bottom of the roof? 15.7
and how high is the wall to the top of the roof? 21.5
How wide is the window (in feet)? 3
and what is the window's height? 2.75

A side wall that is
   40' wide and
   15.7' tall to the roof bottom and
   21.5' tall to the roof top,
containing a window that is
   3' wide and
   2.75' tall,
has 735.8 square feet of paintable wall
and would require 1.84 cans of paint
(assuming that each can will cover 400 square feet of wall).

Thanks for using Paint Calculator 2023. Goodbye!!

Compiling and Running:

This code only uses a standard library (iostream), so it will compile with any C++ compiler. Make sure you practice with g++ on linprog.cs.fsu.edu (and make sure it reports no compile errors!) before you submit the program.

To compile with g++ (reminder)

Save a program file in your CS account space (on linprog.cs.fsu.edu) and compile it with the g++ command:

   g++ paint.cpp

The default name for the executable will be "a.out". To run it, type:

  a.out

If you wish to compile the executable program to have a different name (other than a.out), use the -o option on the g++ command. This allows you to name your executable -- the executable name goes after the "-o". Example:

  g++ paint.cpp -o paint    (executable name will be "paint")

Submitting:

Make sure you are logged into either shell.cs.fsu.edu or linprog.cs.fsu.edu, and the file you want to submit is stored in your current working directory. To submit, type the following command:

  ~myers/csub/submit1 paint.cpp

(noting that the filename for your code should be paint.cpp ).

This will run a script and a C++ program that copies your file into a submission directory. The program will also give you feedback at the end -- it will display the contents of the file you just submitted to standard output. This will allow you to check to make sure that what you submitted was correct.

General Advice - always keep an untouched copy of your finished homework files on your computer science account. These files will have a time-stamp which will show when they were last worked on (a timestamp from the CS servers) and will serve as a backup in case you ever have legitimate problems with submitting files through the web site. Do this for ALL programs.

It is a good idea as well to back up your file(s) by transferring a copy (via SFTP) to your personal computer periodically while you are working on an assignment. This way, if you accidentally delete an important file on your CS account, you'll have a backup on your computer.