Flowcharts: Computer Programming and Start Statement Block

Topics: Diagram, Computer programming, Question Pages: 6 (669 words) Published: December 22, 2014
All About Flowcharts
Flowcharts
A flowchart visually represents and organizes the steps used to write the program—it is a diagram of the “flow” of the process. When programmers write code, they need to give the robot instructions that are both sequential and specific. Flowcharts enable programmers to work these steps out before needing to translate their behaviors into code.

Reading flowcharts
Move from step to step in the chart by following the lines between them. Perform any action listed when you reach a Statement Block (rectangle), and then choose from several different paths to follow when you reach a Decision Block (diamond).

Parts of a Flow Chart
Start of program — Marks the beginning of
the program, begin here. Follow the line to get to
the next block.

Start

Statement block — A statement to execute,

Take one step forward

Gone 50
steps?

or a behavior to perform.

Decision block — A decision point in your
program. Ask a simple question, and do different
things depending on the answer.

No

Yes/No (also True/False, etc.) — Answers to
the question posed in the decision block. Follow
the line labeled with the appropriate answer.

Yes
End of program — Marks the end of the

End

program. If you reach this point, the program
is done!

Exercises
1. In the flowchart above, what will be the first action you take? _______________________________________ 2. If you haven’t gone 50 steps yet, what will you do next? ___________________________________________ 3. If you’ve gone 50 steps, what do you do? _______________________________________________________ 4. Describe the eventual result of your actions if you follow the flowchart above from start to finish. ____________ _____________________________________________________________________________________________________________________________________ _____________________________________________________________________________________________________________________________________

NAME

DATE
1

©2006 4H-CCS

All About Flowcharts continued
Writing Flowcharts
How do you get from a complex task to an organized flowchart describing how to do it? Start with a flowchart containing just the task. Now break it down into smaller, more specific steps in another flowchart. Then, go back and see if you can break down any of those behaviors into simpler parts. Keep on repeating this process until you’ve reached steps that are simple enough for your robot to perform! Start

Start

Wash hands

Start

Turn on water

Wash hands

Turn on water

Dispense soap

Dispense soap

Wash hands

Rub hands together

Wash hands till
clean

No

Hands
clean?

Rinse soap off

Wash hands
till clean

Yes

Rinse soap off

Turn off water

Turn off water

Dry hands

Dry hands

End

End
End

Exercise

5. On a separate sheet of paper, make a flowchart organizing the “flow” of getting ready to go to school in the morning. Be sure to include the following steps in your chart, but don’t be afraid to add other things if you need them!

Select something to wear
Take a shower
Eat breakfast
Leave house for school
Get out of bed

Look for your shoes
Brush your teeth
Put toast in the toaster
Check your alarm clock
Turn on shower

NAME

Put your shoes on
Hit snooze button
Get dressed
Comb your hair
Check the time

DATE
2

©2006 4H-CCS

All About Flowcharts continued
Exercises

6. What behavior does the flow chart below describe?
Start

Pump air

Tire at rated
pressure?

No

Yes

End

7. Create flowcharts to represent these short tasks:
a. “If it’s raining, bring an umbrella.”
b. “Take twenty paces, then turn and shoot.”
c. “Go forward until the Touch Sensor (on port 1) is pressed in, then stop.” d. “Follow Liberty Avenue for 2 miles, then take a left turn onto 40th Street. Go until you reach the bridge, but don’t cross the bridge. Instead, make a right turn onto Foster Street, then...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Computer Programming Essay
  • Essay on Computer Programming and Following Statements
  • INTRODUCTION TO COMPUTER PROGRAMMING Essay
  • Essay about Computer Programming
  • Computer Programming Research Paper
  • Essay about Computer Programming
  • Computer Programming Essay
  • FLOWCHARTS Essay

Become a StudyMode Member

Sign Up - It's Free