Js course 7.2 practice

Question

Time to go shopping!
Everything in the store has been discounted by 20%.
You are given a program that takes the price of an item as input. Complete the program so that it outputs the discounted price to the console.

Sample Input
100

Sample Output
80

Explanation
20 percent of 100 equals to 20 (100 * 20/100), so the discounted price will be 80 (100 - 20).

Note: Remember the division (/) and multiplication (*) operators.

---------code------------

//so we don’t overwhelm you, we’ve hidden the code that executes the input
function main() {
var oldPrice = parseInt(readLine(), 10)
// your code goes here

}

-----------end of code-------------

That's my problem, I can't answer that.
What should I do? I can't understand the question.

"//your code goes here" is the place I should put my answer. What code should I write.

Answer 1

The given code just tells you that there is the variable oldPrice. Use oldPrice for the calculation.

We need to find a newPrice. newPrice is the reduced price. Reduction is 20% of oldPrice

Hence, newPrice = oldPrice – reduction.

Calculate reduction, calculate newPrice.

Output newPrice using console.log

Answer 2

The only thing you need to do is to calculate the reduced amount of oldPrice and output it to the console

Answer 3

What is your question?

Answer 4

Lisa Thanks, I use console.log(), I just solve the quiz.

Answer 5

Great! 👍

Answer 6

Lisa thanks for your comment, my discus button have error. Now I can edit this.

Answer 7

Lisa I need your help, I tried creating new variable inside that function, there's no parameter also to make argument. I tried to call the function, but nothing happen. It's supposed to be basic, because it's quiz for js operations. The function lesson is far. I can't understand.

Answer 8

"//your code goes here" is the place I should put my answer. What code should I write Lisa

Answer 9

Lisa I'm sorry, I really can't understand, can you spoon feed me the answer? 😂😅🙄🙏.

I can't understand the "var oldPrice = parseInt(readLine(), 10)"

It looks like I'm not supposed to see that base on the comment //.

Answer 10

Try this :---–------
function main() {
var increase = parseInt(readLine(), 10);
var prices = [98.99, 15.2, 20, 1026];
//your code goes here
var j=prices.length ;
for(i=0;i<j;i++){
prices[i]= prices[i]+increase;
}
console .log(prices);
}