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Pa1 wednesday flow_chart
- 1. Python with AI– I Flow Chart
- 2. What are flowcharts • A flow chart represents the algorithm using a diagram • Creating a flow chart helps design the logic of the program
- 3. Example – Addtwo numbers given by a user
- 4. Example – Addtwo numbers given by a user Start Accept first input: num1
- 5. Example – Addtwo numbers given by a user Start Accept first input: num1 Accept second input: num2
- 6. Example – Addtwo numbers given by a user Start Accept first input: num1 Accept second input: num2 Sum = num1 + num2
- 7. Example – Addtwo numbers given by a user Start Accept first input: num1 Accept second input: num2 Add = num1 + num2 Print Add Stop
- 8. Example – Addtwo numbers given by a user Start Accept first input: num1 Accept first input: num2 Add = num1 + num2 Print Add Stop
- 9. Example – Addtwo numbers given by a user Start Accept first input: num1 Accept first input: num2 Add = num1 + num2 Print Add Stop
- 10. Basic flow chartsymbols Symbol Purpose Description Flow line Indicated the flow from one block to another Start/Stop Represents the start and end of the flow chart Processing Arithmetic operations Input/Output Input and output operations Conditional Decision making block
- 11. Example – Printthe maximum between two numbers Start Accept first number: num1 Accept second number: num2 as input Print num1 Stop If num1> num2 Print num2 True False
- 12. Example – Printthe maximum between two numbers Start Accept first number: num1 Accept second number: num2 as input Print num1 Stop If num1> num2 Print num2 True False Verify that the flow chart works correctly for a few examples num1 = 10, num2 = 20 num1 = 15, num2 = 5
- 13. Exercise: Create aflow chart for this problem • Given 3 numbers, a, b, c, find the maximum value
- 14. Exercise: Create aflow chart for this problem • Given 3 numbers, a, b, c, find the maximum value • Verify that what your flow chart works correctly • Examples: • a = 10, b = 20, c = 30 • a = 15, b = 30, c = 5 • a = 40, b =80, c = 120
- 15. Exercise: Create code Start Declare3 numbers: a, b, c If a > b Print b FalseTrue If a > c Print a If b > cPrint c Stop True True False False
- 16. Flow Chart: Loops •Ask user to enter a number • Print all even numbers between 0 and the number user entered
- 17. Flow Chart: Loops Start Userinputs a number num1
- 18. Flow Chart: Loops Start Userinputs a number num1 a = 1 If a <= num1 True Is a divisible by 2? Stop True Print a False
- 19. Flow Chart: Loops Start Userinputs a number num1 a = 1 If a <= num1 True Is a divisible by 2? Stop True Print a a = a+1 False
- 20. HW discussion • Findif a number is prime, how would a flow chart for this look?
- 21. HW discussion Start User inputsa number num1 What is a prime number?
- 22. HW discussion Start User inputsa number num1 a = 1 If a < num1 True Is num1 divisible by a? Print it’s a prime number Stop True Print it’s not a prime number a = a+1
- 23. How do youcheck if a string is a palindrome? • How do you access different characters of a string?
- 24. How do youcheck if a string is a palindrome? • How do you access different characters of a string? • How do you access several characters in a string as a block?
- 25. How do youcheck if a string is a palindrome? • How do you access different characters of a string? • How do you access several characters in a string as a block? • Please create a flowchart of how you would check if something is a palindrome logically. Then use the above two operations to code the logic.
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