CODEWITHSUNDEEP
swift
Catherine Goetze
Catherine Goetze

Reputation: 21

Swift error: Binary operator == cannot be applied to type '_' and 'Int'

I'm brand new to Swift and I'm toying around trying to build a simple program that will tell the user what year of the Chinese calendar they were born in based on their age. 

    var string1 = "You are year of the"
    let age:Int? = Int(ageField.text!)

    if age <= 12 {
        let remainder = age!
    } else {
        let remainder = age! % 12
    }

    if remainder == 0 {
        string1 += " sheep."
    }; if remainder == 1 {
        string1 += " horse."
    }; if remainder == 2 {
        string1 += " snake."
    }; if remainder == 3 { // And so on and so forth...

I get an error message on each "if" line that says the binary operator '==' cannot be applied to the operands of type '_' and 'Int'. Any ideas what I can do to solve this problem?

Upvotes: 1

Views: 845

Answers (2)

vadian
vadian

Reputation: 285280

As a summary of Alessandro's answer and the comments your optimized code could look like

var string1 = "You are year of the"
if let age = Int(ageField.text!) {

    let remainder = age % 12

    if remainder == 0 {
        string1 += " sheep."
    } else if remainder == 1 {
        string1 += " horse."
    } else if remainder == 2 {
        string1 += " snake."
    } // And so on and so forth...

} else {
    print("please enter a number")
}

or a bit "swiftier" using a switch statement

var string1 = "You are year of the "
if let age = Int(ageField.text!) {

    switch age % 12 {

    case 0: string1 += "sheep."
    case 1: string1 += "horse."
    case 2: string1 += "snake."
        // And so on and so forth...
    }

} else {
    print("please enter a number")
}

PS: actually the sheep is a goat ;-)

Upvotes: 2

chiarotto.alessandro
chiarotto.alessandro

Reputation: 1589

the variable/constants remainder should be declared outside the if construct and also you can remove the character ";" in your code. Swift does not need ";" at the end of instruction like objective-c

Upvotes: 2

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