Name(s) & ID(s):_________________________________________________________

Assignment P1

CS 100 � Summer 1999

Due: Thursday July 8, 1999 at the beginning of class.

Turn in your assignments according to the instructions given in the first day handout. Remember to include sample output when you turn in your program listings. Also turn in a disk with a runnable version of your code (the same as what you've printed). You are allowed to work with one partner on this assignment. Each problem is worth 20 points. Remember that you will be graded on both style and correctness.

  1. Write a program to convert and display a temperature, input in degrees Celsius, to a temperature in degrees Fahrenheit. The equation for conversion is: fahrenheit = ((celsius * 9)/5) + 32.
  2. Write a program to compute the price of an item that is priced per weight. Your program should prompt the user for the weight of the item (e.g.: "How many pounds?") and also ask for a price per pound. Follow the format below and note that it is ok to output more than two decimal points. If you would like to output only two (by rounding appropriately) then feel free, however it is not required.

    3. How many pounds of the item do you have? 3.65

    What is the price per pound of this item? 2.99

    The total cost of your item is: 10.9135

  3. Problem 2.21 in Lewis & Loftus with a slight revision: A mad-lib is a sentence with certain words left out. You ask people who don't know what the sentence is to give you words of particular parts of speech; these words are then inserted into the sentence to produce weird results. For example:

    4. The ________ professor __________ my __________, and I've never recovered.

    This mad-lib needs and adjective, a verb (past tense), and a noun, in that order, in the three blanks. When the blanks are filled in, it might produce the following sentences:

    The wise professor grade my paper, and I've never recovered.

    The purple professor ate my computer, and I've never recovered.

    Using this mad-lib, write a program that asks the user for an adjective, then a past tense verb, then a noun and then prints the completed sentence. Run your program several times (without recompiling), providing different words.

  4. Problem 3.17 in Lewis & Loftus: Write a program that reads an integer value between 0 and 100 inclusive, representing the amount of a purchase in cents. Produce an error message if the input value is not in that range. If the input is valid, determine the amount of change that would be received from one dollar, and print the number of quarters, dimes, nickels and pennies that should be returned. Maximize the coins with the highest value. Follow the format below. The user input is italicized.

    5. Enter the purchase amount [0-100]: 36

    Your change of 64 cents is given as:

    2 Quarters

    1 Dimes

    0 Nickels

    4 Pennies

    Hint: 64/25 equals 2 and 64 % 25 equals 14.

  5. Take one of the above programs and make it "more interesting." For example, for problem 1 you might query the user whether they wish to convert from Fahrenheit to Celsius or from Celsius to Fahrenheit first, and then, depending on the response, compute the correct answer. The number of points you get is dependent on how "interesting" your change is. (Using the example we just gave will not earn the full 20 points.) Be sure to completely explain what you�re doing in comments at the beginning of the program and include sample output along with a listing of your code.