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let b1 = {
    title: "Gone with the wind",
    price: 30,
    currency: "EUR"
}

let b2 = {
    title: "The godfather",
    price: 40,

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// E1
// 1.1 Write a function that decreases the price of a book to half of its value
// 1.2 Write a function that converts a book's authors' last name to lowercase
// .toLower()
// 1.3 Write a function that converts a book's authors' last name to uppercase
// .toUpper()


let b1 = {
    title: "Gone with the wind",

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// text variables
customerName = "Florian";
customerEmail = "[email protected]"


// numerical variables
customerAge = 25;

console.log("My name is: " + customerName);

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// We define a variable for the users' age; We want to check if they are over 18, in order to be able to drink beer or not;
// Print the following messages: "You are able to drink beer, since you were born in the year: 1992" OR
// "You are NOT able to drink beer, since you were born in the year: 2016"



if (age > 12){
    console.log("YES it is");
} else {

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// Uncomment the code between /* and */;
// Run the code;
// See what happens;
// Does it make sense?


// AND operator: &&
// 3.1
userName = "Siri"
if (3 > 1 && userName === "Siri"){

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// Uncomment the code between /* and */;
// Run the code;
// See what happens;
// Does it make sense?

// 1.0

age = 18;
if (age == 18) {
    console.log("1.0 Yes!");

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// E1. Print all even numbers between 10 and 20 (including 10 and 20). An even number is a number
// x for which the following is true: x % 2 === 0

for (i = 10; i < 21; i++ ) {

}

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ages = [12, 16, 24, 98, 64, 24, 98, 64, 24, 98, 64]
// Print all the ages in your array :)
// We use the for loop

for (i = 0; i < ages.length; i = i + 1){
    currentAge = ages[i];
    console.log("Position is: " + i);
    console.log("Value is: " + currentAge);
}

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ages = [12, 16, 24, 28, 69, 14, 13, 80] 
// E0. Copy all ages which are greater than 18 to a second array

largerThan18 = []
for (i=0; i < ages.length; i++){

}

console.log("Input: " + ages);

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// E0. 
// Write a function that prints the sum of two numbers. 
// The 2 numbers should be passed in as parameters
// e.g. add(3,5)

function addNumbers(number1, number2){
    console.log("The sum is:...");
}

addNumbers(10, 100);