kotlin

fun main() {
    val firstNumber = 10
    val secondNumber = 5
    val thirdNumber = 8

    val result = add(firstNumber, secondNumber)
    val anotherResult = add(firstNumber, thirdNumber)

    println("$firstNumber - $secondNumber = $result")
    println("$firstNumber - $thirdNumber = $anotherResult")
}


fun add(firstNum: Int, secondNum: Int): Int {
    return firstNum - secondNum
}

fun main() {
    val operatingSystem = "ChromeOS"
    val emailId = "[email protected]"
    val mess = displayAlertMessage(operatingSystem, emailId)
    println(mess)
}

// Define your displayAlertMessage() below this line.

fun displayAlertMessage(os: String, ei: String): String {
    val message = "There's a new sign-in request on $os for your Google Account $ei."
    return message
}

fun main() {
    val operatingSystem = "ChromeOS"
    var emailId = "[email protected]"
    val firstUserEmailId = "[email protected]"
    val mess = displayAlertMessage(os= operatingSystem,ei = firstUserEmailId)
    // The following line of code assumes that you named your parameter as emailId.
    // If you named it differently, feel free to update the name.
    println(mess)

    val secondUserOperatingSystem = "Windows"
    val secondUserEmailId = "[email protected]"
    val mess2 = displayAlertMessage(secondUserOperatingSystem, secondUserEmailId)
    println(mess2)

    val thirdUserOperatingSystem = "Mac OS"
    val thirdUserEmailId = "[email protected]"
    val mess3 = displayAlertMessage(thirdUserOperatingSystem, thirdUserEmailId)
    println(mess3)
}


fun displayAlertMessage(os: String, ei: String): String {
    val message = "There's a new sign-in request on $os for your Google Account $ei."
    return message
}


fun main() {
    val Steps = 4000
    val caloriesBurned = pedometerStepsToCalories(Steps);
    println("Walking $Steps steps burns $caloriesBurned calories")
}

fun pedometerStepsToCalories(numberOfSteps: Int): Double {
    val caloriesBurnedForEachStep = 0.04
    val totalCaloriesBurned = numberOfSteps * caloriesBurnedForEachStep
    return totalCaloriesBurned
}


fun main() {
    val timeSpentToday = 200
    val timeSpentYesterday = 220
    val comparison = screenTime(timeSpentToday,timeSpentYesterday)
    println(comparison)
}

fun screenTime(timeSpentToday: Int, timeSpentYesterday: Int): Boolean {
    return timeSpentToday > timeSpentYesterday
}

fun main() {
//     println("City: Ankara")
//     println("Low temperature: 27, High temperature: 31")
//     println("Chance of rain: 82%")
//     println()

//     println("City: Tokyo")
//     println("Low temperature: 32, High temperature: 36")
//     println("Chance of rain: 10%")
//     println()

//     println("City: Cape Town")
//     println("Low temperature: 59, High temperature: 64")
//     println("Chance of rain: 2%")
//     println()

//     println("City: Guatemala City")
//     println("Low temperature: 50, High temperature: 55")
//     println("Chance of rain: 7%")
//     println()
    val city = "Guatemala City"
    val lowTemp = 50
    val highTemp = 55
    val chance = 7
    val disp = displayWeather(city,lowTemp,highTemp,chance)
    println(disp)
}

fun displayWeather(city: String, lowTemp: Int, highTemp: Int, chance: Int): String{
    val c = "City: $city"
    val temp = "Low temperature: $lowTemp, High temperature: $highTemp"
    val ca = "Chance of rain: $chance%"
    return "$c\n$temp\n$ca"
}