Conditional Exercises

1. Write a block of code that checks and logs whether variables are equal or not.

let num1 = 2 let num2 = 3 if(num1 === num2) { console.log("They're even") } else { console.log("They're not") }

2. Write a block of code that logs which of two number variables is larger.

• Your output should look like this (in this example for the numbers x = 5 and y = 10): 'The greater number of 5 and 10 is 10'
• If the two numbers are equal, log: 'The numbers are equal.'

let biggestNumber = num1 > num2 ? num1 : num2 console.log("the bigger number between " + num1 + " and " + num2 + " is " + biggestNumber)

3. Create a string variable with a language code (e.g. "english", "spanish", "german"). Use an if - else if - else statement to log "Hello, World" in the given language, for at least 3 languages. It should default to logging English.

let lang1 = 'english' if (lang1 === 'english') { console.log ('Hello World') } else if (lang1 === 'Spanish') { console.log ('Hola Mundo') } else if (lang === 'Chinese'){ console.log ('Ni Hao Shi Jie') } console.log ('We are speaking English')

4. Do question 3 again but this time use a switch statement.

let lang1 = 'english'; switch (lang1) { case 'spanish': console.log ('Hola Mundo'); break; case 'english': console.log ('Hello World'); break; case 'chinese': console.log ('Ni Hao Shi Jie'); break; default: console.log ('Sorry, we do not speak english'); }

5. Create a variable numGrade that will contain a numeric grade (out of 100). Use an if - else if ... - else statement to log the corresponding letter grade, either "A", "B", "C", "D", or "F".

let numGrade = 63 if(numGrade >= 95){ console.log('Grade is A') } else if (numGrade < 95 && numGrade >= 85) { console.log('Grade is B') } else if (numGrade < 85 && numGrade >= 75) { console.log('Grade is C') } else if (numGrade < 75 && numGrade >= 65) { console.log('Grade is D') } else if (numGrade < 65) { console.log('Grade is F. Failing.') }

6. Create two variables: animalName ('cat', 'dog', etc.) , and numberOfAnimals.

let animalName = 'cat' let numberOfAnimals === 1

Use an if - else statement to log:

• the number

• either in single or plural form. Exp: "5 cats" or "1 dog".

Bonus: Make it handle a few collective nouns like "sheep" and "geese".

7. Write a block of code that logs whether a given number is even or odd.

let num = 3; if (num % 2 === 0){ console.log( num + ' is even ') } else { console.log( num + ' is odd ') }

8. Do question 7 again but use a ternary.

let num = 3 console.log((num % 2 === 0)? "even" : "odd")

9. Write a block of code that checks and logs whether a given number is positive, negative, or equal to 0.

var num = 0 if (num > 0) { console.log(num + " is positive"); } else if (num < 0) { console.log(num + " is negative"); } else { console.log(num + " is zero"); }