My Code ```fun changeIntToDouble(number: Int) { ...

# getting-started

[MisileLab]

My Code

fun changeIntToDouble(number: Int) {
    return number.toDouble()
}

but my ide said Type mismatch: inferred type is Int but Unit was expected
How can I fix it?

[Richard Gomez]

If you don't explicitly specify a return type it defaults to Unit, i.e. "nothing".

You need to explicitly define it as:

fun changeIntToDouble(number: Int): Double {

[Vampire]

Or write it as expresssion body like

fun changeIntToDouble(number: Int) = number.toDouble()

[Richard Gomez]

^ That works too, although my understanding is that too many inferred return types can make IntelliJ slow.