Practice Time: whatShouldIDoToday() - version 2

 

Practice Time

Improve your whatShouldIDoToday() program with the new knowledge from this segment.

1. Add 3 more situations and activities. For example:

mood == "sad" && weather == "rainy" && temperature == 0 -> "stay in bed" 
 temperature > 35 -> "go swimming"

2. Create a single-expression function for each condition and then use it in your when expression.

Challenge

Instead of passing in the mood, get a mood string from the user.

Hint: The !! operator may come handy.

// File:            Main.kt
// Programmer:      Engineer Nolverto Urias Obeso
// Creation Date:   06/15/2023
// Email:           nolvertou@gmail.com
// Description:     Create a program that suggests an activity based on various parameters
//                  and create compact functions.

fun main() {


    println("Hello Kotlin, What should I do today?")
    println("mmm...How are you?")

    val mood: String ?= readLine()
    println("I'm $mood and I'm going to ${whatShouldIDoToday(mood!!)}")
}

/**
 * whatShouldIDoToday function suggests an activity based on various parameters:
 * @param mood:         a required string parameter
 * @param weather:      a string parameter that defaults to "sunny"
 * @param temperature:  an Integer parameter that defaults to 24 (Celsius)
 */
fun whatShouldIDoToday(mood: String,
                       weather: String = "sunny",
                       temperature: Int = 24): String{
    return when{
        goToWalk(mood,weather)                  -> "go for a walk"
        goToSleep(mood, weather, temperature)   -> "stay in bed"
        goToSwim(temperature)                   -> "go swimming"
        else                                    -> "Stay home and read."
    }

}

fun goToWalk(mood: String, weather: String) = ((mood == "happy") && (weather == "Sunny"))
fun goToSleep(mood: String, weather: String, temperature: Int) =
    ((mood == "sad") && (weather == "rainy") && (temperature == 0))
fun goToSwim(temperature: Int) = temperature > 35

Output

Hello Kotlin, What should I do today?
mmm...How are you?
happy
I'm happy and I'm going to Stay home and read.

Process finished with exit code 0