The alarm clock stores times like "07:30". Write Minutes(clock) to return the minutes since midnight ("07:30" is 450) and nil. A bad format, something that isn't a number, hours outside 0–23 or minutes outside 0–59 all return 0 and the error "bad time".
Minutes("07:30")→(450, None)Minutes("7:5x")→(0, 'bad time')Minutes("25:00")→(0, 'bad time')func Minutes(clock string) (int, error)package main
import (
"errors"
"strconv"
"strings"
)
func Minutes(clock string) (int, error) {
parts := strings.Split(clock, ":")
if len(parts) != 2 {
return 0, errors.New("bad time")
}
h, err := strconv.Atoi(parts[0])
if err != nil {
return 0, errors.New("bad time")
}
m := 0
// your code here: like the hours part, turn parts[1] into m, returning the error if it fails
// your code here: hours or minutes out of range? return the error
return h*60 + m, nil
}
Run tries the examples. When they look right, Submit.