You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: ddaniel27.go
    path of file: ./repos/retos-programacion-2023/Retos/Reto #24 - CIFRADO CÉSAR [Fácil]/go
    
    the code of the file until where you have to start completion: package main

func main() {
	str := "Hello, World!"
	shift := 3
	encrypted := encrypt(str, shift)
	decripted := decrypt(encrypted, shift)
	println(encrypted)
	println(decripted)
}

func 
    
func decrypt(str string, shift int) string {
	var decrypted string
	for _, c := range str {
		if (c < 'a' || c > 'z') && (c < 'A' || c > 'Z') {
			decrypted += string(c)
			continue
		}
		aux := c - rune(shift)
		if (aux < 'a' && aux > 'Z') || aux < 'A' {
			aux += 26
		}
		decrypted += string(aux)
	}
	return decrypted
}