// 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" "strings" "unicode/utf8" ) func main() { msg := os.Args[1] l := utf8.RuneCountInString(msg) s := msg + strings.Repeat("!", l) fmt.Println(s) }