package main import "errors" import "fmt" import "math" func Sqrt(value float64)(float64, error) { if(value < 0){ return 0, errors.New("Math: negative number passed to Sqrt") } return math.Sqrt(value), nil } func main() { result, err:= Sqrt(-1) if err != nil { fmt.Println(err) } else { fmt.Println(result) } result, err = Sqrt(9) if err != nil { fmt.Println(err) } else { fmt.Println(result) } }
We use cookies to provide and improve our services. By using our site, you consent to our Cookies Policy. Accept Learn more