Basic use of log printer fucs

package drill

import (
	"log"
)

func main() {
	log.Println("Application", "start")
	log.Print("no", "space")
	log.Printf("Hello, %s!", "world")
	log.Fatal("stop application")
}

$ /opt/go/bin/go run logging.go 
2025/12/14 07:08:34 Application start
2025/12/14 07:08:34 nospace
2025/12/14 07:08:34 Hello, world!
2025/12/14 07:08:34 stop application
exit status 1