Assignment 3

Problems

1. Is it a triangle?

   Write a program that accepts three numerical values and outputs a message indicating whether they could represent the lengths of the sides of a triangle or not. (Note: Not necessarily a right-angled triangle, just any triangle at all.)

   A sample run might look like this,

   =================
   Is it a triangle?
   -----------------
   Enter your first value: 4
   Enter the second value: 9
   Enter the third value: 3
   I'm afraid those three numbers could NOT represent the lengths of the sides of a triangle.

2. Is it an Armstrong number?

   An Armstrong number is an n-digit number that is equal to the sum of its digits each raised to the nth power. For example 153 equals 1³+5³+3³, so it is an Armstrong number. Write a program that inputs a three-digit number, and outputs a message saying whether it is an Armstrong number or not.

   A sample run might look like this,

   ==========================
   Is it an Armstrong number?
   --------------------------
   Enter your number: 284
   I'm afraid 284 is NOT an Armstrong number.

   Hint: You can pull apart a number to get its individual digits by dividing and modulo-ing by appropriate multiples of 10, e.g. num %10 will give you the 1s digit, i.e. the rightmost digit, and num/100 will give you the 100s digit, i.e. the leftmost digit.

3. Richter Scale

   Write a program that inputs the Richter magnitude of an earthquake and outputs the corresponding description and typical effects according to the table* below.

   Richter Magnitudes	Description	Earthquake Effects
   Less than 2.0	Micro	Microearthquakes, not felt.
   2.0-2.9	Minor	Generally not felt, but recorded.
   3.0-3.9		Often felt, but rarely causes damage.
   4.0-4.9	Light	Noticeable shaking of indoor items, rattling noises. Significant damage unlikely.
   5.0-5.9	Moderate	Can cause major damage to poorly constructed buildings over small regions. At most slight damage to well-designed buildings.
   6.0-6.9	Strong	Can be destructive in areas up to about 160 kilometres (100 mi) across in populated areas.
   7.0-7.9	Major	Can cause serious damage over larger areas.
   8.0-8.9	Great	Can cause serious damage in areas several hundred miles across.
   9.0-9.9		Devastating in areas several thousand miles across.
   10.0+	Epic	Never recorded; see below for equivalent seismic energy yield.

   A sample run might look like this,

   ======================
   Earthquake Interpreter
   ----------------------
   Enter the Richter magnitude of the earthquake: 4.4
   Magnitude: 4.4
   Description: Light.
   Effects: Noticeable shaking of indoor items, rattling noises. 
   Significant damage unlikely.

4. Choosing a Valentine's gift

   The graphic below** provides a flowchart for choosing a valentine's day gift. Write a program that implements it. (Click the image to see a full-size version).

   

   A sample run might look like this,

   ======================================
   Find Your Perfect Valentine's Day Gift
   --------------------------------------
   Is your valentine male (M) or female (F)? F
   What's your budget (in Dh)? 800
   Will you see her on the day:
       1. No I'm/she's out of the country at the moment.
       2. Yes, of course.
   1 or 2? 2
   I suggest a romantic dinner. Many restaurants have special dining deals
   on Valentine's day.
       

You may take liberties as I have and simplify the lengthy text of the recommendations that are offered.

Hint: Remember to use raw_input instead of input to read string values.

Logistics

• Use the following naming scheme for your program files: aassignment#pproblem#vversion#.py . So your first attempt at problem 1 on this assignment will be named a3p1v1.py and your second attempt (should there be one) will be named a3p1v2.py .

• Submit your assignment by emailing your python programs to me. I advise to submit early and submit often, since I will often review your programs as they are submitted and provide feedback that will let you improve them.

* based on one on the Wikipedia page on the Richter Scale.

** original source.