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// Three ways to declare (and initialize) variables

var code = 1;

let someOtherVariable = 'Hello';

const PROGRAM_NAME = 'debug_example.js';

let color = 'BLACK';

let age = Math.PI;

console.log(age);

console.log(age = '0'); // What will this line print?

console.log(age == 0); // What will this line print?

// The result of a logical operator like == === < > <= >= || && is a BOOLEAN (true, false)

console.log(age === 0); // What will this line print?

// // === checks the TYPE and VALUE of the variable

function printCarInfo(code, color, age) {

if (code === 1) {

let carState = ' used';

if (age === 0) {

carState = ' new';

}

console.log('a ' + color + carState + ' car');

};

}

// What is the difference between '' and ""

// I use ' because I don't have to press SHIFT to get "

printCarInfo(code, color, age);

printCarInfo(1, 'PINKISH BLUE ORANGE(1)', 0); // expect 'a PINKISH BLUE ORANGE(1) new car'

printCarInfo(0, 'PINKISH BLUE ORANGE(2)', 0); // expect nothing

printCarInfo(1, 'Green', 0); // expect 'a Green new car'

printCarInfo(1, 'Green', 1); // expect 'a Green used car'

printCarInfo(1, 'Green', -999999); //

printCarInfo(1, 'Green', 1000000); //

printCarInfo(-1, null, -999999999); // expect nothing

printCarInfo('1', null, -999999999); // expect nothing

printCarInfo(1, null, -999999999); // expect 'a null used car'

printCarInfo(1, undefined, -999999999); // expect 'a undefined used car'

printCarInfo(1); // ?????? WTF ????? expect 'a undefined used car', 'an error', 'an exception' 'a used car'

printCarInfo(2, 'Cyan', 1); // Expect nothing - code is not === 1