STOP!!!

Create a new AWS Instance for Unit 1:

• use your dotfiles to recreate your PDE
  ―――――――――――――――

Learning Outcome

At the end of this lesson, you will be able to:

• create an application that does something useful

• review the 6 computer steps to solving a structured problem

Review

• why is the "Hello World" program important

  • one of the biggest hurdles in programming is getting through all the "little things", just to make something show up

Lesson

• read, again "Problem Solving", Chapter 2, Computer Based Problem Solving

  • read up to and including "Problem Solving"

Daily Assignment

• read the following problem:

  • Depending on the logging company, maple logs are cut into lengths of either 0.25 m, 0.5 m or 1m. Maple logs weigh 20 kg/m and a logging truck can carry 1100 kg. How many maple logs should be placed on a truck if you know the lengths of the logs? (Note: a truck will only take 1 length type of logs at a time).

• create the first 5 steps for the above question

• once your first 5 steps are approved, do the rest so that a person can select the log length and the program tells the user how many logs can go on a truck

• no user input error checking needed yet

• NOTE: for input, use bun-promptx:

  • bun add bun-promptx --save-dev

• here is an example program

/**

 * The program shows how to get input

 *   and deal with numbers.

 *

 * By:      Mr. Coxall

 * Version: 1.0

 * Since:   2020-01-01

 */

import { createPrompt } from 'bun-promptx'

const name = createPrompt('What is your name? ')

console.log(`Hey there ${String(name.value)}`)

const ageString = createPrompt('What is your age? ')

let ageNumber = parseInt(ageString.value)

ageNumber = ageNumber - 10

console.log(`Age is > ${ageNumber}`)

console.log('\nDone.')

• • Note: 

    • ageString is actually a Dictonary (associative array)

    • ageString is also of type string | null

      • we will worry about that next time!

• Note: the ` is most likely below the "ESC" key!

  • with the "~"

• Note: please ensure you know the difference between var, let and const

  • https://www.youtube.com/watch?v=xI1RzJNd9IU

Extra

• do the above in a second language

  • in Java you will need a "scanner"

  • use someString = input.nextLine(); to get a line of text

  • REMEMBER to "close" the scanner when done!