ITEC1620 ObjectBased Programming

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ITEC1620Object-Based Programming

• Lecture 2b
• Structured Programming III

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Review

• 3 structures of structured programming
• Sequence
• Perform an action
• Branch
• Select an action (or no action)
• Loop
• Repeat an action

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Nested Control Structures

• Structured programming involves designing an
  algorithm by using the three structures
• Structures can be nested/embedded
• Select between two loops
• Make a decision in a loop
• etc

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Sample ProgramDecision in a Loop

• Write a program that tells a user if their next
  guess of a random number (1-10) needs to be
  higher or lower
• Declare and initialize random number
• Declare and get guess
• While guess not correct
• Decide if guess was too high or too low

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Sample Program IIOptional Loops

• Write a program that outputs all of the integers
  from 0 to an input number
• Declare and get input
• If input is positive
• Loop from 0 to input
• Otherwise, loop from 0 to input

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Sample Program IIINested Loop

• Write a program that prints out an hourly
  timetable for a seven-day week
• Loop for seven days
• Loop for 24 hours
• Print time slot

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Sample Program IVTelephone Banking

• Write a program that implements an ATM interface
• 1 get balance
• 2 deposit
• 3 withdraw
• 9 end session

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Sample Program VClass average and pass/fail

• Write a program that allows grades to be entered
  (-1 to exit) and calculates the class average and
  the number of students that passed
• Pass is 60

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Questions?
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Readings and Assignments

• Assignment 1 Iconic Programming