Chris Pollett>Old Classes>PIC 10a, Spring 2000>Hw1

The purpose of this assignment is twofold: to get you used to the Visual C++ programming environment, and to give you practice with some basic data types, arithmetic, and conditionals.

Part A

1. Make sure you have your PIC Lab NT account.
2. If you like, create your Visual C++ workspace before starting this project, following the instructions in the Getting Started Guide. Or, if you prefer, you can start Visual C++ and start writing your program, and create the workspace the first time you save your source code, as described in the Supplement to your text.

Part B

Create a program named pic10ahw1.cpp (for this assignment you only need to put this one file in your \submit directory) that converts between various measurement units according to the following specifications:

1. The program starts by giving the user a menu of 4 conversion choices: slugs to kilograms, kilograms to slugs, degrees Kelvin to degrees Farenheit, and degrees Farenheit to degrees Kelvin. It then asks the user to enter a number.
2. Depending on the choice, the program asks the user to input his/her weight in slugs or kilograms or the temperature in Kelvin or Farenheit, and then converts into the other unit of of measurement. One slug is equal to 14.594 kilograms, and x degrees Kelvin is 9(x - 273)/5 + 32 degrees Farenheit (you'll have to rearrange this to do the conversion from Farenheit to Kelvin).
3. If the user enters a weight less than or equal to 22.725 kg, the program should tell the user to eat more; if the user enters a temperature less than 0 degrees Farenheit, it should tell the user to wear a sweater.
4. The variables you use for weights must be double's. Furthermore, the conversion factor from slugs to kilograms must be stored in a variable of type double that is initialized in its declaration.
5. The variable you use for inputting the temperature must be an int, but the output should be a double (and the arithmetic must be accurate).
6. The program should output an error message if the user types in a choice other than 1, 2, 3, or 4.

Here are some sample runs of the program; the output of your program must look exactly the same.

What would you like to convert?
1.  Slugs to kilograms.
2.  Kilograms to slugs.
3.  Degrees Kelvin to degrees Farenheit.
4.  Degrees Farenheit to degrees Kelvin.
Enter your choice -> 1
How many slugs do you weigh? 1
You weigh 14.594 kilograms.
You need to eat more!

What would you like to convert?
1.  Slugs to kilograms.
2.  Kilograms to slugs.
3.  Degrees Kelvin to degrees Farenheit.
4.  Degrees Farenheit to degrees Kelvin.
Enter your choice -> 3
What is the temperature in degrees Kelvin? 274
That is 33.8 degrees Farenheit.

What would you like to convert?
1.  Slugs to kilograms.
2.  Kilograms to slugs.
3.  Degrees Kelvin to degrees Farenheit.
4.  Degrees Farenheit to degrees Kelvin.
Enter your choice -> 4
What is the temperature in degrees Farenheit? -5
That is 252.444 degrees Kelvin.
You should probably wear a sweater today.

Homework 1 FAQ.

Homework 1 Solution.