/**
 * This function takes two numbers as input, subtracts the second number from the first number using 
 * subtraction assignment operator '-=', and checks if the result is null or not.
 */
fun subtractAndCheckNone(num1: Int, num2: Int): Boolean {

    // Subtracting num2 from num1 using subtraction assignment operator
    var result = num1
    result -= num2
    
    // Checking if the result of subtraction is null or not
    return result == null
}
/**
 * This function takes two numbers as input, subtracts the second number from the first number using 
 * subtraction assignment operator '-=', and checks if the result is null or not.
 */
fun subtractAndCheckNone(num1: Int, num2: Int): Boolean {
/**
 * This function takes two numbers as input, subtracts the second number from the first number using 
 * subtraction assignment operator '-=', and checks if the result is null or not.
 */
fun subtractAndCheckNone(num1: Int, num2: Int): Boolean {

    // Subtracting num2 from num1 using subtraction assignment operator
    var result = num1
    result -= num2
    
    // Checking if the result of subtraction is null or not
    return result == null
}