I am trying to run this code:

```
fun main() {
    print("This is a calculator")
    print("enter your first number")
    val no1 = readLine()!!
    print("enter your operation")
    val operation1 = readLine()!!
    print("enter your second number")
    val no2 = readLine()!!

    val result = if(operation1 == '*')
    print("$val no1 * $val no2")
}

```

But I get the following error:

> 
> 'if' must have both main and 'else' branches if used as an expression
> Operator '==' cannot be applied to 'String' and 'Char' Keyword cannot
> be used as a reference Keyword cannot be used as a reference
> 
> 
> 

It also keeps coming up with Kotlin: Keyword cannot be used as a reference within my IDE.

I am very new to Kotlin and I am just trying to create a basic calculator, can you please help?