Exercises: validation

Zilo is a self-proclaimed Zen master. Goat Zen is nothing like human Zen. Goat Zen is about purity-of-hide. The more tattoos, the better. Why? Zilo says it came to him in a divine dream.

Write a program to compute a goat's Zen rating, based on the number of tattoos they have.

There's one exception. If the goat has a tattoo on its tongue, its zen rating is 5. No need to ask any other questions.

Validation rules:

• Tongue tattooness must be Y or N, although allow spaces and upper/lowercase.
• Number of tattoos: Integer, from 0 to 100.

Here's some I/O:

More:

Even more.

Yet more.

Upload a zip of your project folder. The usual coding standards apply.

You have some Snow Whites and some dwarves. Each Snow White needs seven dwarves, but you might have more or fewer dwarves than you need. Write a program to figure out how many dwarves to add, or get rid of.

Ask the user for the number of Snow Whites they have, and the number of dwarves. Both must be integers. There must be 1 or more Snow Whites, but not more than 17. There must be 0 or more dwarves, but not more than 93.

Compute the number of dwarfs needed or are extra. Use the output format below.

Here's some I/O.

More I/O. Note that singular/plural is handled correctly.

More I/O:

More I/O:

Hints (you don't need to use them all):

• The abs() function will take the absolute value of a number. So abs(3) and abs(-3) are both 3.
• The str() function will convert an int or float into a string.
• The number of dwarves needed is seven times the number of Snow Whites, minus the number of dwarves you have. If you have too many dwarves, that value will be negative.

If you have the right number of dwarves, the message might be "You have the right number of dwarves."

If you have one too many dwarves, the message might be "Get rid of one dwarf."

If you have way too many dwarves, the message might be "Get rid of [number] dwarves."

Upload a zip of your project folder. The usual coding standards apply.

Bo Peep is in the yurting biz. There's a big demand for sheep yurts in Mongolia, Manitoba, and other M places.

Bo sells four models, and can make custom yurts, too. Here are the yurts Bo sells:

Here are the areas one sheep needs at minimum:

So if you had, say, 10 small sheep, 11 medium, and 8 big, you'd need at least 8 × 1.15 + 11 × 0.83 + 10 × 0.67 = 25.03 sq meters.

You also need a ventilator to prevent methane explosions. There are three models: Sipper (low flow), Gulper (medium flow), and Chugger (blast it!). The Sipper is cheap but less effective. If you use one, you'll need to add 22% to the area needed, so there's space around the sheep for the gas. The Gulper is better, but you'll still need to add 12%. The Chugger is... well, it sucks really well. No extra space needed.

Let's say you used the Gulper with the 10 - 11 - 8 sitch. You need 25.03 * 1.12 = 28 square meters.

What model yurt would the program recommend in this case? A Rambler.

Validate the input. Keep looping until the user enters valid deets. Rules:

• Small 🐑: integer from 0 to 100.
• Medium 🐑: integer from 0 to 70.
• Big 🐑: integer from 0 to 50.
• Ventilator: S, G, or C. Allow upper/lowercase. Allow extra spaces.

Some I/O:

Round Area required to the nearest integer.

More I/O.

Even more I/O.

Upload a zip of your project folder. The usual coding standards apply.