Sure, let's create a simple Kotlin quiz example where the user is asked multiple-choice questions and receives feedback on their answers. Here's how we can do it:
Example
import kotlin.system.exitProcess
data class Question(val prompt: String, val options: List<String>, val correctAnswer: Int)
fun displayQuestion(question: Question) {
println(question.prompt)
question.options.forEachIndexed { index, option ->
println("${index + 1}. $option")
}
}
fun getUserAnswer(): Int {
print("Your answer: ")
return readLine()?.toIntOrNull() ?: 0
}
fun evaluateAnswer(question: Question, userAnswer: Int): Boolean {
return userAnswer == question.correctAnswer
}
fun main() {
val questions = listOf(
Question(
"What is the capital of France?",
listOf("London", "Paris", "Berlin", "Rome"),
2
),
Question(
"Which planet is known as the Red Planet?",
listOf("Venus", "Mars", "Jupiter", "Saturn"),
2
),
Question(
"What is the largest mammal?",
listOf("Elephant", "Blue whale", "Giraffe", "Hippopotamus"),
2
)
)
var score = 0
for (question in questions) {
displayQuestion(question)
val userAnswer = getUserAnswer()
if (evaluateAnswer(question, userAnswer)) {
println("Correct!")
score++
} else {
println("Incorrect! The correct answer was: ${question.options[question.correctAnswer - 1]}")
}
println()
}
println("Quiz complete!")
println("Your final score is: $score/${questions.size}")
if (score == questions.size) {
println("Congratulations! You got all the questions correct.")
} else {
println("Better luck next time!")
}
}
This program defines a Question class to represent each question in the quiz. Each question has a prompt, a list of options, and the index of the correct answer. The main function then creates a list of questions, asks the user each question, evaluates their answers, and keeps track of their score.
Here's a breakdown of the key functions:
displayQuestion: Displays the prompt and options of a given question.getUserAnswer: Gets the user's input for their answer.evaluateAnswer: Compares the user's answer with the correct answer and returns true if they match.When you run this program, it will ask the user each question, provide feedback on their answers, and finally display their score at the end of the quiz.