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// E5. 
// Write a function that takes two parameters: an array and a Number;
// The function returns the index of 
// the element's first occurence in the array;

// should return position of number in array
function findPositionOfNumberInArray(array, number){
    // iterate over the array -> for loop

    // compare the item of each position in the array to the <givenNumber>

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// Work with functions that take as parameters arrays (one or more)

// E3. Write a function that returns the sum of all elements in an array
function addArrayElements(array){
    
    return sum; // number
}

// E3.a Modify the function to only return the sum of all even elements;

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// Before you write your own function, answer 2 questions:
// 1. What should the function do? (the action)
// 2. What does it need? (the parameters)

function helloUser(userName, userAge){
    console.log("Hello, " + userName);
    console.log("You are " +userAge+ " years old");
}

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ages = [12, 16, 24, 28, 69, 14, 13, 80] 
// I can copy values from one array into another
// Copy all ages which are greater than 18 to a second array

largerThan18 = []
for (i=0; i < ages.length; i++){
    if (ages[i] > 18){
        largerThan18.push(ages[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 (let i = 0; i < ages.length; i = i + 1){
    let currentAge = ages[i];
    console.log("Position is: " + i);
    console.log("Value is: " + currentAge);
}

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console.log("before the loop");
// I want to print all integer numbers from 0 to 50;

// for (i = 0; i <= 50; i++){
for (i = 0; i <= 50; i = i+1){
    console.log(i);    
    if (i===10){
        console.log("bingo!");
    }
}

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readlineSync = require('readline-sync')

userName = readlineSync.question("What is your name?\n");
console.log(typeof userName);

age = readlineSync.question("What is your age?\n");
console.log("The type of age\n");
console.log(typeof age);

// Task 1:

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readlineSync = require('readline-sync')

console.log("BEFORE")
userName = readlineSync.question("What is your name?\n");
console.log("Nice to meet you, " + userName);
console.log("AFTER")

limit = 1970; 
// hardcoded value;
// how to make this come from the user?

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let books = [
    {
        pages: 200,
        year: 2020,
        author: {
            firstName: "Paul",
            lastName: "Anton"
        },
        language: "DE"    

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let books = [
    {
        pages: 200,
        year: 2020,
        author: {
            firstName: "Paul",
            lastName: "Anton"
        },
        language: "DE"