The While Loop - currentCard exercise

chloeoscar · February 3, 2019, 3:59pm

Hello All,

In the section practice for While Loop, there is the current card exercise as below:

gist.github.com

https://gist.github.com/codecademydev/e7da6a80e593e840f24df7b8197cff78

main.js

const cards = ['diamond', 'spade', 'heart', 'club'];

// Write your code below
let currentCard;
while (currentCard !== 'spade') {
  currentCard = cards[Math.floor(Math.random() * 4)];
  console.log(currentCard);
};

and it prints something like this (everytime different, but always ends with ‘spade’). I thought that the point of this loop is “not printing the ‘spade’”? I understand it stops when it hits spade, but i thought it shall not print out ‘spade’? or if not, in what way i can code it in a way not printing the ‘spade’ (but still using the same logic as it stops while it hits ‘spade’)? Sorry i hope i made myself clear. Thanks!!

diamond
diamond
heart
diamond
heart
heart
club
club
diamond
club
club
club
heart
spade

And at the Do While look exercise:

gist.github.com

https://gist.github.com/codecademydev/494fa5e8a18c09ef11e78ada7816717b

main.js

// Write your code below

let cupsOfSugarNeeded = 3;

let cupsAdded = 0;

do {
  cupsAdded = cupsAdded ++;
} while (cupsAdded < cupsOfSugarNeeded);

within the bracket, instead of ‘cupsAdded ++’, can i use ‘cupsAdded = cupsAdded ++’, and what’s the difference? Thanks!!

stetim94 · February 3, 2019, 5:38pm

you could print spade after the loop? You know for sure its a spade

why would you do that? cupsAdded++ is a shorthand for:

cupsAdded = cupsAdded + 1

so writing cupsAdded = cupsAdded ++ is the same as:

cupsAdded = cupsAdded + cupsAdded + 1

chloeoscar · February 4, 2019, 5:04pm

Thanks for the answer! xx