hello.js

'use strict'
// exercise 1 
console.log('-------------exercise 1----------------')

console.log('MaRHBA  Donia ', 'Arabic');
console.log('ciao  mondo ', 'italian');
console.log('Hallo  wereld ', 'Nederlands');
console.log('Hello  worold ', 'English');

// exercise 2
console.log('-------------exercise 2----------------')

console.log('I m Awesome');
// exercise 3
console.log('-------------exercise 3----------------')

let x ; 
console.log('x will be undefined');
console.log(x);
x = 123 ;
console.log('x will be 123');
console.log(x);
// exercise 4
console.log('-------------exercise 4----------------')

let y = 'I am a variable';
console.log('y will be  am a variable ');

console.log(y);
// exercise 5
console.log('-------------exercise 5----------------')

const z = 7.25 ;
console.log(z) ;
const a = Math.round(z);
console.log(a) ;
if (z > a){console.log(z);} 
else{console.log(a);}
// exercise 6 
console.log('-------------exercise 6----------------')

let pets = [];
console.log('the value of variable will be [Nothing in this aaray]');
console.log(pets);
pets = ['cat','sheep','hamster','chicken','horse'];
console.log(pets);
pets.push('Dog');
console.log(pets);
// exercise 7
console.log('-------------exercise 7----------------')

let myString = 'this is a test string for calculating it s length!';
console.log(myString);
console.log(myString.length);
// exercise 8
console.log('-------------exercise 8----------------')

let x8 = 9;
console.log('the value of x8:' + x8 );
let y8 = 'hello';
console.log('the value of y8 : ' + y8);
let z8 = 3.42;
console.log('the value of z8 : ' + z8);
let k8 = [32 , 'age'];
console.log('the value of k8 : ' + k8);
console.log('the value of x8:' + x8  + typeof(x8));
console.log('the value of y8 : ' + y8 + typeof(y8)) ;
console.log('the value of z8 : ' + z8 + typeof(z8)) ;
console.log('the value of k8 : ' + k8 + typeof(k8));
if(typeof x8 == typeof y8){console.log(x8 + ' and '  + y8  + ' have same type.')}
else{console.log(x8 + ' and '  + y8  + ' dont have same type.')}
if(typeof x8 == typeof z8){console.log(x8 + ' and '  + z8  + ' have same type.')}
else{console.log(x8 + ' and '  + z8  + ' dont have same type.')}
if(typeof x8 == typeof k8){console.log(x8 + ' and '  + k8  + ' have same type.')}
else{console.log(x8 + ' and '  + k8  + ' dont have same type.')}
if(typeof y8 == typeof z8){console.log(y8 + ' and '  + z8  + ' have same type.')}
else{console.log(y8 + ' and '  + z8  + ' dont have same type.')}
if(typeof y8 == typeof k8){console.log(y8 + ' and '  + k8  + ' have same type.')}
else{console.log(y8 + ' and  '  + k8  + ' dont have same type.')}
if(typeof z8 == typeof k8){console.log(z8 + ' and '  + k8  + ' have same type.')}
else{console.log(z8 + ' and '  + k8  + ' dont have same type.')}
// exercise 9
console.log('-------------exercise 9----------------')
var num = 6 ;
var num = num % 3 ;
console.log("6 % 3 = 0 " );
console.log('% is the  reminder result of dividing tow  numbers');