input-output.go

package main
import "fmt"

func getUserInput(input interface{}) (int, error) {
    var err error

    switch t := input.(type) {
        case *int:
            _, err = fmt.Scanf("%d", input)
        case *string:
            _, err = fmt.Scanf("%s", input)
        default:
            fmt.Printf("unexpected type %T", t)
    }

    if(err != nil) {
        return 0, err
    }

    return 0, nil
}

func getNumText(input int) {
    switch input {
        case 0:
            fmt.Println("Zero")
        case 1:
            fmt.Println("One")
        case 2:
            fmt.Println("Two")
        case 3:
            fmt.Println("Three")
        case 4:
            fmt.Println("Four")
        case 5:
            fmt.Println("Five")
        case 6:
            fmt.Println("Six")
        case 7:
            fmt.Println("Seven")
        case 8:
            fmt.Println("Eight")
        case 9:
            fmt.Println("Nine")
        case 10:
            fmt.Println("Ten")
    }
}

func main() {
    //your code goes here
    var num1, num2, num3 int

    getUserInput(&num1)
    getUserInput(&num2)
    getUserInput(&num3)


    getNumText(num1)
    getNumText(num2)
    getNumText(num3)

}