A student writes this code to calculate the area of a rectangle and display it. The program runs, but nothing appears on the canvas. What is the bug?
function setup() {
createCanvas(300, 300);
background(0, 255, 0);
}
function draw() {
area(20, 5);
}
function area(w, h) {
let result = w * h;
}

Question

A student writes this code to calculate the area of a rectangle and display it. The program runs, but nothing appears on the canvas. What is the bug? 
 function setup() { 
   createCanvas(300, 300); 
   background(0, 255, 0); 
 } 
 function draw() { 
   area(20, 5); 
 } 
 function area(w, h) { 
   let result = w * h; 
 }

Answer

multiplying two numbers requires a built-in p5.js function.

Answer

let cannot be used inside a custom function.

Answer

The function correctly calculates the area, but never displays it because text() is missing inside area().

Answer

area() cannot be called from inside draw().

Crowdly

A student writes this code to calculate the area of a rectangle and display it. ...

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