Print to STDERR or STDOUT

---

examples/stderr-stdout/stderr_stdout.go

package main

import (
    "fmt"
    "os"
)

func main() {
    fmt.Println("To STDOUT using fmt.Println")
    fmt.Fprintln(os.Stderr, "To STDERR using fmt.Fprintlt")
    os.Stderr.WriteString("To STDERR using os.Stderr.WriteString\n")
}