package main

import (
	"fmt"
)

var flags = []int{'#', '+', '_', '0', ' '}

type T int

func (t T) Format(f fmt.State, verb rune) {
	for _, flag := range flags {
		fmt.Printf("\t%c: %v\n", flag, f.Flag(flag))
	}
}

func main() {
	var t T
	for _, flag := range flags {
		format := "%" + string(rune(flag)) + "x"
		fmt.Printf("Format %q:\n", format)
		fmt.Printf(format, t)
		fmt.Println()
	}
}