Can anyone help me to correct my mistakes?

Question

fun main(args: Array<String>) {
var hours = readLine()!!.toInt()
var total: Double = 0.0
var d=hours-5;
var g=hours-24;

if(hours>24){
var f=15+(0.5*g) ;
println(f);
}
else{
var f=5+(0.5*d)
;
println(f);
}
}

Answer 1

Did you notice that your variable d become <0 if hours <5?
Try using an else if statement to avoid it.

Also, if hours is 49. It should be 15 * 2 + 1* 0.5 = 30.5, not 15 + 25 * 0.5 = 27.5
(© CarrieForle)

Answer 2

Because 49= 24*2+1

It's mentioned in the task
"if a car parked for 26 hours, the bill should be 15+(2*0.5) = 16.0, because it was parked for 24 hours plus 2 additional hours."

Answer 3

Atul
I noted that when I input 24, the output is 14.5, not 15.

I would suggest the following.

if >= 1day
Use /24 to ascertain the number of days from hours, and charge 15 per day.
Use %24 to ascertain the extra hours & charge 0.5 per hour

else < 1day
Your existing code deals well with this already.
Allow for parking of less than 5 hrs

Your coding is good, just the logic needs to be tweaked

Answer 4

Why will 1 be again multiplied ?