Embedded Files
Learning Outcome
Learning Outcome
At the end of this lesson, you will be able to:
understand and use a for loop
Quiz Questions
Quiz Questions
With a pencil and paper, answer the following questions:
What is the minimum number of times a DO..WHILE loop will execute? Why?
In what situation would you use a DO..WHILE loop instead of a WHILE loop?
Write the pseudocode for the following:
Ask the user to enter a word or "q" to quit
Use a DO..WHILE loop to keep track of all the words entered
After the loop has finished, display the total number of words entered
Review
Review
do..while loops
execute a minimum of 1 time
Lesson
Lesson
from the online book Computer Based Problem Solving by Patrick Coxall, read:
For loops:
have the counter initialization, boolean expression & counter increment/decrement all on the first line
however, the boolean expression and counter increment/decrement are only executed AFTER each loop is executed
execute a minimum of 0 times
An infinite loop occurs when the boolean expression never evaluates to false and therefore the loop goes on forever and your program crashes.
Range Function in Python
Range Function in Python
see these examples
Note: in order to specify a range from 0 to num, you must type:
for counter in range (num + 1)
Example 1
#!/usr/bin/env python3
#to iterate on the number 0 to 9 passes
for counter in range(10):
Example 2
#!/usr/bin/env python3
#to iterate between 10 to 19 passes
for counter in range(10, 20):
Example 3
#!/usr/bin/env python3
#to iterate on the number 1 to 12 going up by 2 each time
for counter in range(1, 13, 2):
For Loop Pseudocode
For Loop Pseudocode
For Loop Flowchart
For Loop Flowchart
Here is the Problem:
Here is the Problem:
Write a program that asks the user to enter a whole number (i.e. 0, 1, 2, ...)
It then uses a for loop to calculate the power of two of each number from 0 until that number.
Make sure your program does not crash if a user enters invalid input!
For Loop Code Example in Python
For Loop Code Example in Python
Power of Two Program in Python
Power of Two Program in Python
Activity
Activity
in groups of 2, do the following on the board for today's daily assignment:
Top-Down Design
Flow Chart
Pseudocode
Test Cases
Daily Assignment
Daily Assignment
complete the Daily Assignment section in Hãpara Workspace for this day
if Hãpara is not working, make a copy of this document
move it to your IMH-ICS folder for this course
Extra
Extra
recreate the same program in C++
For Loop Code in C++
For Loop Code in C++
Note: This code does not have error checking!
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