Unit 1: Day 11

START DATE:DUE DATE:STATUS:Open

11.1 eCommerce Variables Example

Discuss the progression of the credit:
- Coming up, we are going to do a couple of assignments focusing on variables and math. Therefore today we do a fairly length example that is only complex because it juggles lots of variables
- 1 new assignment each day, with the credit wrapping up on Friday
- Exam (in class project) will be on Tuesday or Wednesday next week
Talk about the complexity of this example being harder in other languages
Discuss ways to enter the number bought more realistically.
- Demonstrate that Window.Prompt will not work well.
Point out the nested IF statement with the timer.
- AAP-2.I.1: Nested conditional statements, or “else if” statements, consist of conditional statements within conditional statements.
- AAP-2.I.2: If the Boolean condition of the initial conditional statement evaluates to false, then the Boolean condition of the nested conditional statement is evaluated.

Unit 1 - Example 10 - Guitar Store

let product1 = "Fender Stratocaster";

let price1 = 3050.25;

let bought1 = 0;

let product2 = "Strings";

let price2 = 12.85;

let bought2 = 0;

let total1, total2, grandTotal;

let timer = 0;

function setup() {

let sketch = createCanvas(500, 600);

sketch.parent("mycanvas");

//bought1 = window.prompt("How many?");

}

function draw() {

background(252, 186, 3);

fill(0);

noStroke();

textSize(24);

text("Couprie's Guitar Store", 80, 40);

textSize(14);

text(product1,20, 150);

text(product2,20, 180);

text("$"+ price1, 150, 150);

text("$"+ price2, 150, 180);

text(bought1, 250, 150);

text(bought2, 250, 180);

total1 = price1 * bought1;

text("$" + total1, 300, 150);

total2 = price2 * bought2;

text("$" + total2, 300, 180);

if( bought2 <= 15 ){

if(millis() > timer){ //how to make a 2 second timer

timer = millis()+1000;

bought2++;

}

}//end draw

function keyPressed(){

bought1 = key;

}//end keyPressed

11.2 AP CPS Concepts

Discuss the following AP concepts if you have not done so organically
- AAP-2.C.1 Arithmetic operators are part of most programming languages and include addition, subtraction, multiplication, division, and modulus operators.
- AAP-2.C.3 The exam reference sheet provides the arithmetic operators +, -, *, /,and MOD
- AAP-2.C.4 The order of operations used in mathematics applies when evaluating expressions. The MOD operator has the same precedence as the* and / operators.

11.3 Finish Collector Card Assignment

Continue to Unit 1: Day 12 »