// For more tutorials: https://blog.learngoprogramming.com // // Copyright © 2018 Inanc Gumus // Learn Go Programming Course // License: https://creativecommons.org/licenses/by-nc-sa/4.0/ // package main import ( "fmt" "os" "strconv" ) func main() { // Atoi returns an error value // So, you should always check it n, err := strconv.Atoi(os.Args[1]) fmt.Println("Converted number :", n) fmt.Println("Returned error value:", err) }