Skill set for this LAB:

• Understand and implement the Program Development Cycle
• Use Simple Functions
• LOOP WHILE, LOOP FOR
• Use Top-Down Design
• Use variables and assignment statements
• Use input and print functions
• Use basic arithmetic operations
• Save, run and submit programs
• Testing programs
• Writing Lab reports

• Python Programming Assignment

  In all programs:

  • YOU MUST TO WRITE INFORMATIVE COMMENTS!
  • You MUST use Top-Down Design
  • Each subtask MUST be a separate function
  • You MUST have function MAIN in your program.
  • In this lab you WILL NOT SHOW me the output and the source file. It will be YOUR responsibility to TEST your program
  • Submission: print source file and lab report. You can write lab report in the same file AFTER the program but make sure you start each line with # to indicate comments. You can also write lab repot on the paper.

  Lab Report for Each Program must include TESTING PART ONLY: For each test input, document the output your program produced. If the output is NOT correct, document the list of action you performed to correct logical errors.

  Problem 1 : Write the following functions:

  • Function sumInput that has one parameter - the number of input integers. The function inputs integers and finds their sum. USE LOOP FOR in this function.
  • Function productInput that has one parameter - the number of input integers. The function inputs integers and finds their product. USE LOOP WHILE in this function.
  • Function average that has NO parameters. The function inputs the series of positive integers. The first zero or negative terminates the input. The function finds the average of the input numbers. In this function you can only use LOOP WHILE.
  • Function menu that has one parameter - choice. The function performs the following: if the choice is 1, user is asked to enter the number of inputs and the function sumInput is called. If the choice is 2, user is asked to enter the number of inputs and the function productInput is called. If the choice is 3, function average is called. For all other choices, function outputs error message.
  • Write main function that reads one integer - user's choice and call function menu.

  Problem 2 : Write the following functions:

  • Function isPrime that has one parameter - integer number. The function prints YES if the parameter is prime and NO otherwise. Prime number is a number that has exactly 2 divisors - 1 and the number itself. By definition, 1 is NOT prime number.
  • Function isPerfect that has one parameter - integer number. The function prints YES if the parameter is perfect number and NO otherwise. The number called perfect if the sum of the proper divisors equals to the number itself. Proper divisor is the divisor that is less than the number. Example: 6 is perfect. Proper divisors of 6 are 1, 2, and 3 and their sum is 6. Other perfect numbers, for example, are 28, 496, 8128. See HERE for more information.
  • unction menu that has one parameter - choice. The function performs the following: if the choice is 1, user is asked to enter the number and the function isPrime is called. If the choice is 2, user is asked to enter the number and the function isPerfect is called. For all other choices, function outputs error message.
  • Write main function that reads one integer - user's choice and call function menu.