fmt

func Errorf(format string, a ...interface{}) error

func Fprint(w io.Writer, a ...interface{}) (int, error)

func Fprintf(w io.Writer, format string, a ...interface{}) (int, error)

func Fprintln(w io.Writer, a ...interface{}) (int, error)

func Fscan(r io.Reader, a ...interface{}) (int, error)

func Fscanf(r io.Reader, format string, a ...interface{}) (int, error)

func Fscanln(r io.Reader, a ...interface{}) (int, error)

func Print(a ...interface{}) (int, error)

func Printf(format string, a ...interface{}) (int, error)

func Println(a ...interface{}) (int, error)

func Scan(a ...interface{}) (int, error)

func Scanf(format string, a ...interface{}) (int, error)

func Scanln(a ...interface{}) (int, error)

func Sprint(a ...interface{}) string

func Sprintf(format string, a ...interface{}) string

func Sprintln(a ...interface{}) string

func Sscan(str string, a ...interface{}) (int, error)

func Sscanf(str string, format string, a ...interface{}) (int, error)

func Sscanln(str string, a ...interface{}) (int, error)