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@davidystephenson
Created September 13, 2025 17:08
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/*
// 1. Write a JavaScript expression to calculate the sum of two numbers, `num1` and `num2`.
var num1 = 10
var num2 = 11
var sum = num1 + num2
console.log(sum)
// 2. Write a program to calculate the area of a rectangle given its length and width.
var length = 5
var width = 10
var area = length * width
console.log(area)
// 3. Write a program to calculate the remainder when a given number, `dividend`, is divided by another number, `divisor`.
var divided = 25
var divisor = 8
var remainder = 25 % 8
console.log(remainder)
// 4. Write a program to increment a variable, `count`, by 1.
var count = 0
count = count + 1
console.log(count)
// 5. Write a program to concatenate two strings, `str1` and `str2`, using the concatenation operator (+).
var first = 'Tallulah'
var last = 'Bankhead'
var full = first + ' ' + last
console.log(full)
// 6. Write a program to negate a boolean value, `isTrue`.
var isTrue = true
var isFalse = !isTrue
console.log(isFalse)
// 7. Write a program to check if a given number, `num`, is between 10 and 20 (inclusive).
var num = 15
var atLeast10 = num >= 10
var atMost20 = num <= 20
var between = atLeast10 && atMost20
console.log(between)
// 8. Write a program to check if a person is eligible for a discount based on the age (`age`) and membership status (`isMember`). The discount is applicable if the person is at least 60 years old or is a member.
var age = 65
var isMember = false
var atLeast60 = age >= 60
var discount = atLeast60 || isMember
console.log(discount)
// 9. Write a program to check if a given number, `num`, is not equal to 0.
var num = 5
var not0 = num !== 0
console.log(not0)
// 10. Write a program to check if a student is eligible for a scholarship based on their grade (`grade`) and attendance (`attendance`). The student is eligible if their grade is at least 90 or their attendance is at least 95%.
var grade = 80
var attendance = 0.99
var goodGrade = grade >= 90
var goodAttendance = attendance >= 0.95
var scholarship = goodGrade || goodAttendance
console.log(scholarship)
// 11. Write a program to check if a given string, `str`, is either "apple" or "banana".
var str = 'olives'
var isApple = str === 'apple'
var isBanana = str === 'banana'
var appleOrBanana = isApple || isBanana
console.log(appleOrBanana)
// 12. Write a program to check if a given number, `num`, is both positive and even.
var num = 4
var positive = num > 0
var remainder = num % 2
var even = remainder === 0
var positiveAndEven = positive && even
console.log(positiveAndEven)
// 13. Write a program to check if a person is eligible to vote based on their age (`age`) and citizenship (`isCitizen`). The person is eligible if they are at least 18 years old and a citizen.
var age = 20
var citizen = true
var atLeast18 = age >= 18
var vote = atLeast18 && citizen
console.log(vote)
// 14. Write a program to check if a given number `num` is out of range of 0 and 100, is either less than 0 or greater than 100.
var num = 150
var lessThan0 = num < 0
var greaterThan100 = num > 100
var outOfRange = lessThan0 || greaterThan100
console.log(outOfRange)
*/
// 15. Write a program to swap 2 numbers
var a = 5
var b = 10
var placeholder = a
a = b
b = placeholder
console.log(a)
console.log(b)
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