package four import "fmt" type Four struct { bingo bingo } func Init(filepath string) *Four { four := &Four{ bingo: bingo{}, } four.bingo.read(filepath) return four } func (d *Four) Answer() string { score, call := d.bingo.play() return fmt.Sprintf("The winning score is %d on call %d. Final score %d", score, call, score*call) } func (d *Four) FollowUp() string { d.bingo.reset() score, call := d.bingo.slowPlay() return fmt.Sprintf("The last winning score is %d on call %d. Final score %d", score, call, score*call) }