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import Foundation

// Function to generate a random math problem
func generateMathProblem() -> String {
    let num1 = Int.random(in: 1...10)
    let num2 = Int.random(in: 1...10)
    let operatorOptions = ["+", "-", "*", "/"]
    let selectedOperator = operatorOptions.randomElement()!
    let mathProblem = "\(num1) \(selectedOperator) \(num2)"
    return mathProblem
}

// Function to check if the user's answer is correct
func isAnswerCorrect(mathProblem: String, answer: Int) -> Bool {
    if let expression = NSExpression(format: mathProblem),
       let expectedResult = expression.expressionValue(with: nil, context: nil) as? Int {
        return answer == expectedResult
    }
    return false
}

// Main function to handle the alarm
func alarmHandler() {
    let mathProblem = generateMathProblem()
    print("Solve the math problem: \(mathProblem)")
    
    if let userAnswer = readLine(), let answer = Int(userAnswer) {
        if isAnswerCorrect(mathProblem: mathProblem, answer: answer) {
            print("Alarm Off. Problem solved!")
            return
        } else {
            print("Incorrect answer. The alarm continues.")
            alarmHandler()
        }
    }
}

// Set the alarm
print("Your alarm is set!")
alarmHandler()